Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Free
Faster access than browser!
 

Trilobite

+ Save concept

Trilobites (meaning "three lobes") are a fossil group of extinct marine arachnomorph arthropods that form the class Trilobita. [1]

256 relations: Accommodation (eye), Agnostida, Alnif, American Scientist, Amulet, Anatomical terms of location, Animal, Anomalocaridid, Antenna (biology), Arachnomorpha, Armadillidiidae, Arthropod, Arthropod eye, Artiopoda, Asaphida, Baltica, Beecher's Trilobite Bed, Benthic zone, Biogeography, Biological Journal of the Linnean Society, Biology Letters, Biostratigraphy, Bohemia, British Columbia, Brittle star, Bumastus, Bundenbach, Burgess Shale, Calcite, Calcium carbonate, Calymene, Calymene blumenbachii, Calymenina, Cambrian, Cambrian explosion, Cambrian Stage 3, Canadian Journal of Earth Sciences, Carboniferous, Carolinites, Carroll Lane Fenton, Caves of Arcy-sur-Cure, Cephalon (arthropod head), Cheirurus, Chelicerata, Chengjiang County, Chitin, Christiaan Huygens, Circular motion, Clade, Class (biology), ..., Close-packing of equal spheres, Coat of arms, Compound eye, Continental drift, Cornea, Cornell University Press, Corynexochida, Crab, CRC Press, Crinoid, Crustacean, Cruziana, Cyclopyge (trilobite), Dalmanites, Depth of field, Devonian, Diplichnites, Doublet (lens), Ductina, Dudley, Earth-Science Reviews, Ecdysis, Ecological niche, Ediacaran, Edward Lhuyd, Ellipsocephalus, Elrathia, Encrinurus, Endops, Eodalmanitina, Eodiscina, Eoredlichia, Erbenochile, Evolution, Evolutionary history of life, Evolutionary pressure, Exoskeleton, Extinction, Eye, Fallotaspis, Family (biology), Filter feeder, Fossil, Gena, Genus, Geological Magazine, Geology (journal), Germany, Gill, Glabella, Gondwana, Gradient-index optics, Hamburg, New York, Harpetida, Head, Heinz Christian Pander, Holochroal eye, Horseshoe crab, Hudson Bay, Hunsrück Slate, Hypostome (trilobite), Iapetus Ocean, Instar, Integrative and Comparative Biology, Irradiance, Isole Tremiti, Isopoda, Isotelus, Joachim Barrande, Johann Ernst Immanuel Walch, Journal of Paleontology, Kainops, Lachnostoma, Lagerstätte, Lapidary, Late Devonian extinction, Laurentia, Lemdadella, Lens (anatomy), Lichida, Limestone, Limulus, List of index fossils, List of trilobite genera, List of U.S. state fossils, Llandeilo, Llandrindod Wells, Lobster, Maotianshan Shales, Marine regression, Merriam-Webster, Mildred Adams Fenton, Morocco, Morphology (biology), Nature (journal), Nektaspida, Nevadia, New York (state), Newfoundland and Labrador, Niles Eldredge, Notostraca, Odontopleurida, Ohio, Olenellina, Olenellus, Olenoides, Olenus (trilobite), Ommatidium, Ontario, Ophiocoma wendtii, Order (biology), Ordovician, Ordovician–Silurian extinction events, Palaeogeography, Palaeoclimatology, Palaeoecology, Palaeontology (journal), PALAIOS, Paleobiology (journal), Paleontology, Paleozoic, Pannotia, Paradoxides, Paralejurus, Parasitism, Parvancorina, PDF, Pelagic zone, Peltura, Pennsylvania, Permian, Permian–Triassic extinction event, Peronopsis, Petroglyph, Phacopida, Phacopidae, Phacopina, Phacops, Phacops rana, Philosophical Transactions of the Royal Society, Phylogenetic tree, Phylogenetics, Plankton, Plate tectonics, Powys, Precambrian, Predation, Pricyclopyge, Proceedings of the National Academy of Sciences of the United States of America, Proetida, Progenitor, Ptychopariida, Punctuated equilibrium, Pygidium, Queensland Museum, Raphiophoridae, Redlichiida, Redlichiina, Refractive index, René Descartes, Rome, New York, Royal Society of Edinburgh, Rusophycus, Russia, New York, Scavenger, Science (journal), Selenopeltis, Siberia, Silurian, Speciation, Spherical aberration, Spriggina, Stratigraphy, Subfamily, Symbiosis, Tagma (biology), Taxon, Taxonomic rank, Taxonomy (biology), Telson, Thorax, Trace fossil, Treatise on Invertebrate Paleontology, Triarthrus, Trilobite, Triproetus, United Kingdom, University of Chicago Press, Utah, Ute people, Vintage Books, Walcott–Rust quarry, Wales, Walliserops, Welsh Marches, Wenlock Group, West Midlands (county), Western New York, Weymouthia (trilobite), Wheeler Shale, Wisconsin, Wren's Nest, Xiuqiella, Yiliangella, Yiliangellina, Yonne, Yukoniidae, Yunnanocephalus. Expand index (206 more) »

Accommodation (eye)

Accommodation is the process by which the vertebrate eye changes optical power to maintain a clear image or focus on an object as its distance varies.

New!!: Trilobite and Accommodation (eye) · See more »

Agnostida

Agnostida is an order of arthropod which first developed near the end of the Early Cambrian period and thrived during the Middle Cambrian.

New!!: Trilobite and Agnostida · See more »

Alnif

Alnif is a town in Tinghir Province, Drâa-Tafilalet, Morocco.

New!!: Trilobite and Alnif · See more »

American Scientist

American Scientist (informally abbreviated AmSci) is an American bimonthly science and technology magazine published since 1913 by Sigma Xi, The Scientific Research Society.

New!!: Trilobite and American Scientist · See more »

Amulet

An amulet is an object that is typically worn on one's person, that some people believe has the magical or miraculous power to protect its holder, either to protect them in general or to protect them from some specific thing; it is often also used as an ornament though that may not be the intended purpose of it.

New!!: Trilobite and Amulet · See more »

Anatomical terms of location

Standard anatomical terms of location deal unambiguously with the anatomy of animals, including humans.

New!!: Trilobite and Anatomical terms of location · See more »

Animal

Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia.

New!!: Trilobite and Animal · See more »

Anomalocaridid

The AnomalocarididsNeolatin compound word from Greek ἀνώμαλος anomalos and καρίς karis (gen.: καρίδος), meaning "strange shrimp".

New!!: Trilobite and Anomalocaridid · See more »

Antenna (biology)

Antennae (singular: antenna), sometimes referred to as "feelers," are paired appendages used for sensing in arthropods.

New!!: Trilobite and Antenna (biology) · See more »

Arachnomorpha

Arachnomorpha is a subdivision or clade of Arthropoda, comprising the monophyletic group formed by the trilobites, other great appendage arthropods and trilobite-like families (Helmetiidae, Xandarellidae, Naraoiidae, Liwiidae, and Tegopeltidae), and a diverse sister clade including the chelicerates.

New!!: Trilobite and Arachnomorpha · See more »

Armadillidiidae

Armadillidiidae is a family of woodlice, a terrestrial crustacean group in the order Isopoda.

New!!: Trilobite and Armadillidiidae · See more »

Arthropod

An arthropod (from Greek ἄρθρον arthron, "joint" and πούς pous, "foot") is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and paired jointed appendages.

New!!: Trilobite and Arthropod · See more »

Arthropod eye

Apposition eyes are the most common form of eye, and are presumably the ancestral form of compound eye.

New!!: Trilobite and Arthropod eye · See more »

Artiopoda

The Artiopoda is a grouping of extinct arthropods that includes trilobites and their close relatives.

New!!: Trilobite and Artiopoda · See more »

Asaphida

Asaphida is a large, morphologically diverse order of trilobites found in marine strata dated from the Middle Cambrian until their extinction during the Silurian.

New!!: Trilobite and Asaphida · See more »

Baltica

Baltica is a paleocontinent that formed in the Paleoproterozoic and now constitutes northwestern Eurasia, or Europe north of the Trans-European Suture Zone and west of the Ural Mountains.

New!!: Trilobite and Baltica · See more »

Beecher's Trilobite Bed

Beecher's Trilobite Bed is a Konservat-Lagerstätte of Late Ordovician (Caradoc) age located within the Frankfort Shale in Cleveland's Glen, Oneida County, New York, USA.

New!!: Trilobite and Beecher's Trilobite Bed · See more »

Benthic zone

The benthic zone is the ecological region at the lowest level of a body of water such as an ocean or a lake, including the sediment surface and some sub-surface layers.

New!!: Trilobite and Benthic zone · See more »

Biogeography

Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time.

New!!: Trilobite and Biogeography · See more »

Biological Journal of the Linnean Society

The Biological Journal of the Linnean Society is a direct descendant of the oldest biological journal in the world, the Transactions of the Linnean Society.

New!!: Trilobite and Biological Journal of the Linnean Society · See more »

Biology Letters

Biology Letters is a peer-reviewed, biological, scientific journal published by the Royal Society.

New!!: Trilobite and Biology Letters · See more »

Biostratigraphy

Biostratigraphy is the branch of stratigraphy which focuses on correlating and assigning relative ages of rock strata by using the fossil assemblages contained within them.

New!!: Trilobite and Biostratigraphy · See more »

Bohemia

Bohemia (Čechy;; Czechy; Bohême; Bohemia; Boemia) is the westernmost and largest historical region of the Czech lands in the present-day Czech Republic.

New!!: Trilobite and Bohemia · See more »

British Columbia

British Columbia (BC; Colombie-Britannique) is the westernmost province of Canada, located between the Pacific Ocean and the Rocky Mountains.

New!!: Trilobite and British Columbia · See more »

Brittle star

Brittle stars or ophiuroids are echinoderms in the class Ophiuroidea closely related to starfish.

New!!: Trilobite and Brittle star · See more »

Bumastus

Bumastus is an extinct genus of corynexochid trilobites which existed from the Early Ordovician period to the Late Silurian period.

New!!: Trilobite and Bumastus · See more »

Bundenbach

Bundenbach is an Ortsgemeinde – a municipality belonging to a Verbandsgemeinde, a kind of collective municipality – in the Birkenfeld district in Rhineland-Palatinate, Germany.

New!!: Trilobite and Bundenbach · See more »

Burgess Shale

The Burgess Shale is a fossil-bearing deposit exposed in the Canadian Rockies of British Columbia, Canada.

New!!: Trilobite and Burgess Shale · See more »

Calcite

Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO3).

New!!: Trilobite and Calcite · See more »

Calcium carbonate

Calcium carbonate is a chemical compound with the formula CaCO3.

New!!: Trilobite and Calcium carbonate · See more »

Calymene

Calymene (meaning beautiful crescent as a reference to the glabella) is a genus of trilobites in the order Phacopida that are found throughout North America, North Africa, and Europe in primarily Silurian outcrops.

New!!: Trilobite and Calymene · See more »

Calymene blumenbachii

Calymene blumenbachii, sometimes erroneously spelled blumenbachi, is a species of trilobite discovered in the limestone quarries of Wren's Nest Hill in Dudley, England.

New!!: Trilobite and Calymene blumenbachii · See more »

Calymenina

Calymenina is a suborder of the trilobite order Phacopida.

New!!: Trilobite and Calymenina · See more »

Cambrian

The Cambrian Period was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon.

New!!: Trilobite and Cambrian · See more »

Cambrian explosion

The Cambrian explosion or Cambrian radiation was an event approximately in the Cambrian period when most major animal phyla appeared in the fossil record.

New!!: Trilobite and Cambrian explosion · See more »

Cambrian Stage 3

Cambrian Stage 3 is the still unnamed third stage of the Cambrian.

New!!: Trilobite and Cambrian Stage 3 · See more »

Canadian Journal of Earth Sciences

The Canadian Journal of Earth Sciences is a monthly peer-reviewed scientific journal established in 1963, which reports current research on all aspects of the Earth sciences.

New!!: Trilobite and Canadian Journal of Earth Sciences · See more »

Carboniferous

The Carboniferous is a geologic period and system that spans 60 million years from the end of the Devonian Period million years ago (Mya), to the beginning of the Permian Period, Mya.

New!!: Trilobite and Carboniferous · See more »

Carolinites

Carolinites is a genus of trilobite, assigned to the Telephinidae family, that occurs during the Lower and Middle Ordovician.

New!!: Trilobite and Carolinites · See more »

Carroll Lane Fenton

Carroll Lane Fenton (12 February 1900, Butler County, Iowa - 16 November 1969, New Brunswick, New Jersey) was a geologist, paleontologist, neoichnologist, and historian of science.

New!!: Trilobite and Carroll Lane Fenton · See more »

Caves of Arcy-sur-Cure

The caves of Arcy-sur-Cure are a series of caves located on the commune of Arcy-sur-Cure, Burgundy, France.

New!!: Trilobite and Caves of Arcy-sur-Cure · See more »

Cephalon (arthropod head)

The cephalon is the head section of an arthropod.

New!!: Trilobite and Cephalon (arthropod head) · See more »

Cheirurus

Cheirurus (from Greek xeip, cheir meaning "hand" and oupá, oura meaning "tail") is a genus of phacopid trilobites that lived from the Late Cambrian to the Middle Devonian.

New!!: Trilobite and Cheirurus · See more »

Chelicerata

The subphylum Chelicerata (New Latin, from French chélicère, from Greek khēlē "claw, chela" and kéras "horn") constitutes one of the major subdivisions of the phylum Arthropoda.

New!!: Trilobite and Chelicerata · See more »

Chengjiang County

Chengjiang County (Chinese: officially 澂江县; often spelled 澄江县;; earlier Tchinkiang) is in Yuxi, Yunnan Province, China, just north of Fuxian Lake.

New!!: Trilobite and Chengjiang County · See more »

Chitin

Chitin (C8H13O5N)n, a long-chain polymer of ''N''-acetylglucosamine, is a derivative of glucose.

New!!: Trilobite and Chitin · See more »

Christiaan Huygens

Christiaan Huygens (Hugenius; 14 April 1629 – 8 July 1695) was a Dutch physicist, mathematician, astronomer and inventor, who is widely regarded as one of the greatest scientists of all time and a major figure in the scientific revolution.

New!!: Trilobite and Christiaan Huygens · See more »

Christmas

Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.

New!!: Trilobite and Christmas · See more »

Christmas and holiday season

The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.

New!!: Trilobite and Christmas and holiday season · See more »

Christmas Eve

Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.

New!!: Trilobite and Christmas Eve · See more »

Christmas traditions

Christmas traditions vary from country to country.

New!!: Trilobite and Christmas traditions · See more »

Circular motion

In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular path.

New!!: Trilobite and Circular motion · See more »

Clade

A clade (from κλάδος, klados, "branch"), also known as monophyletic group, is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".

New!!: Trilobite and Clade · See more »

Class (biology)

In biological classification, class (classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank.

New!!: Trilobite and Class (biology) · See more »

Close-packing of equal spheres

In geometry, close-packing of equal spheres is a dense arrangement of congruent spheres in an infinite, regular arrangement (or lattice).

New!!: Trilobite and Close-packing of equal spheres · See more »

Coat of arms

A coat of arms is a heraldic visual design on an escutcheon (i.e., shield), surcoat, or tabard.

New!!: Trilobite and Coat of arms · See more »

Compound eye

A compound eye is a visual organ found in arthropods such as insects and crustaceans.

New!!: Trilobite and Compound eye · See more »

Continental drift

Continental drift is the movement of the Earth's continents relative to each other, thus appearing to "drift" across the ocean bed.

New!!: Trilobite and Continental drift · See more »

Cornea

The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber.

New!!: Trilobite and Cornea · See more »

Cornell University Press

The Cornell University Press is a division of Cornell University housed in Sage House, the former residence of Henry William Sage.

New!!: Trilobite and Cornell University Press · See more »

Corynexochida

Corynexochida is an order of trilobite that lived from the Lower Cambrian to the Middle Devonian.

New!!: Trilobite and Corynexochida · See more »

Crab

Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) (translit.

New!!: Trilobite and Crab · See more »

CRC Press

The CRC Press, LLC is a publishing group based in the United States that specializes in producing technical books.

New!!: Trilobite and CRC Press · See more »

Crinoid

Crinoids are marine animals that make up the class Crinoidea of the echinoderms (phylum Echinodermata).

New!!: Trilobite and Crinoid · See more »

Crustacean

Crustaceans (Crustacea) form a large, diverse arthropod taxon which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill, woodlice, and barnacles.

New!!: Trilobite and Crustacean · See more »

Cruziana

Cruziana is a trace fossil consisting of elongate, bilobed, approximately bilaterally symmetrical burrows, usually preserved along bedding planes, with a sculpture of repeated striations that are mostly oblique to the long dimension.

New!!: Trilobite and Cruziana · See more »

Cyclopyge (trilobite)

Cyclopyge is a genus of small to average size trilobites that lived during the Ordovician.

New!!: Trilobite and Cyclopyge (trilobite) · See more »

Dalmanites

Dalmanites is a genus of trilobite in the order Phacopida.

New!!: Trilobite and Dalmanites · See more »

Depth of field

In optics, particularly as it relates to film and photography, the optical phenomenon known as depth of field (DOF), is the distance about the Plane of Focus (POF) where objects appear acceptably sharp in an image.

New!!: Trilobite and Depth of field · See more »

Devonian

The Devonian is a geologic period and system of the Paleozoic, spanning 60 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya.

New!!: Trilobite and Devonian · See more »

Diplichnites

Diplichnites are arthropod trackways with two parallel rows of blunt to elongate, closely spaced tracks oriented approximately perpendicularly to the mid-line of the trackway.

New!!: Trilobite and Diplichnites · See more »

Doublet (lens)

In optics, a doublet is a type of lens made up of two simple lenses paired together.

New!!: Trilobite and Doublet (lens) · See more »

Ductina

Ductina is a genus of extinct, small to average sized, eyeless phacopid trilobite, that lived during the Devonian.

New!!: Trilobite and Ductina · See more »

Dudley

Dudley is a large town in the county of West Midlands, England, south-east of Wolverhampton and north-west of Birmingham.

New!!: Trilobite and Dudley · See more »

Earth-Science Reviews

Earth-Science Reviews is a monthly peer-reviewed scientific journal published by Elsevier.

New!!: Trilobite and Earth-Science Reviews · See more »

Ecdysis

Ecdysis is the moulting of the cuticle in many invertebrates of the clade Ecdysozoa.

New!!: Trilobite and Ecdysis · See more »

Ecological niche

In ecology, a niche (CanE, or) is the fit of a species living under specific environmental conditions.

New!!: Trilobite and Ecological niche · See more »

Ediacaran

The Ediacaran Period, spans 94 million years from the end of the Cryogenian Period 635 million years ago (Mya), to the beginning of the Cambrian Period 541 Mya.

New!!: Trilobite and Ediacaran · See more »

Edward Lhuyd

Edward Lhuyd (occasionally written as Llwyd in recent times, in accordance with Modern Welsh orthography) (1660 – 30 June 1709) was a Welsh naturalist, botanist, linguist, geographer and antiquary.

New!!: Trilobite and Edward Lhuyd · See more »

Ellipsocephalus

Ellipsocephalus is an extinct genus of blind trilobite that lived during the Cambrian.

New!!: Trilobite and Ellipsocephalus · See more »

Elrathia

Elrathia is a genus of ptychopariid trilobite species that lived during the Middle Cambrian of Utah, and possibly British Columbia.

New!!: Trilobite and Elrathia · See more »

Encrinurus

Encrinurus is a long-lived genus of phacopid trilobites that lived in what are now Africa, Asia, Australia, Europe, North America, and South America from the middle Ordovician to the early Devonian from 472—412.3 mya, existing for approximately.

New!!: Trilobite and Encrinurus · See more »

Endops

Endops yanagisawai is a proetid trilobite belonging to the family Phillipsiidae, endemic to Middle Permian-aged marine strata in Fukushima Prefecture, Japan.

New!!: Trilobite and Endops · See more »

Eodalmanitina

Eodalmanitina is a trilobite in the order Phacopida, that existed during the middle Ordovician in what is now France.

New!!: Trilobite and Eodalmanitina · See more »

Eodiscina

Eodiscina is a suborder of trilobites, a well known group of marine arthropods.

New!!: Trilobite and Eodiscina · See more »

Eoredlichia

Eoredlichia is an extinct genus of trilobite of average to large size (up to long, or when including the spine on the ninth thorax segment pointing horizontally to the back, that itself equals the main body length).

New!!: Trilobite and Eoredlichia · See more »

Erbenochile

Erbenochile is a genus of spinose phacopid trilobite, of the family Acastidae, found in Lower to Middle Devonian age rocks from Algeria and Morocco.

New!!: Trilobite and Erbenochile · See more »

Evolution

Evolution is change in the heritable characteristics of biological populations over successive generations.

New!!: Trilobite and Evolution · See more »

Evolutionary history of life

The evolutionary history of life on Earth traces the processes by which both living organisms and fossil organisms evolved since life emerged on the planet, until the present.

New!!: Trilobite and Evolutionary history of life · See more »

Evolutionary pressure

Any cause that reduces reproductive success in a portion of a population potentially exerts evolutionary pressure, selective pressure or selection pressure.

New!!: Trilobite and Evolutionary pressure · See more »

Exoskeleton

An exoskeleton (from Greek έξω, éxō "outer" and σκελετός, skeletós "skeleton") is the external skeleton that supports and protects an animal's body, in contrast to the internal skeleton (endoskeleton) of, for example, a human.

New!!: Trilobite and Exoskeleton · See more »

Extinction

In biology, extinction is the termination of an organism or of a group of organisms (taxon), normally a species.

New!!: Trilobite and Extinction · See more »

Eye

Eyes are organs of the visual system.

New!!: Trilobite and Eye · See more »

Fallotaspis

Fallotaspis is a genus of redlichiid trilobite genus found in Early Cambrian-aged strata of the United States and Morocco.

New!!: Trilobite and Fallotaspis · See more »

Family (biology)

In biological classification, family (familia, plural familiae) is one of the eight major taxonomic ranks; it is classified between order and genus.

New!!: Trilobite and Family (biology) · See more »

Filter feeder

Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure.

New!!: Trilobite and Filter feeder · See more »

Fossil

A fossil (from Classical Latin fossilis; literally, "obtained by digging") is any preserved remains, impression, or trace of any once-living thing from a past geological age.

New!!: Trilobite and Fossil · See more »

Gena

Gena (Amharic:ገና) or qarsa(ቃርሳ) is a traditional field hockey game popular in the Ethiopian highlands.

New!!: Trilobite and Gena · See more »

Genus

A genus (genera) is a taxonomic rank used in the biological classification of living and fossil organisms, as well as viruses, in biology.

New!!: Trilobite and Genus · See more »

Geological Magazine

The Geological Magazine is a peer-reviewed scientific journal established in 1864, covering the earth sciences.

New!!: Trilobite and Geological Magazine · See more »

Geology (journal)

Geology is a peer-reviewed publication of the Geological Society of America (GSA).

New!!: Trilobite and Geology (journal) · See more »

Germany

Germany (Deutschland), officially the Federal Republic of Germany (Bundesrepublik Deutschland), is a sovereign state in central-western Europe.

New!!: Trilobite and Germany · See more »

Gill

A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide.

New!!: Trilobite and Gill · See more »

Glabella

The glabella, in humans, is the skin between the eyebrows and above the nose.

New!!: Trilobite and Glabella · See more »

Gondwana

Gondwana, or Gondwanaland, was a supercontinent that existed from the Neoproterozoic (about 550 million years ago) until the Carboniferous (about 320 million years ago).

New!!: Trilobite and Gondwana · See more »

Gradient-index optics

Gradient-index (GRIN) optics is the branch of optics covering optical effects produced by a gradual variation of the refractive index of a material.

New!!: Trilobite and Gradient-index optics · See more »

Hamburg, New York

Hamburg is a town in Erie County, New York, United States.

New!!: Trilobite and Hamburg, New York · See more »

Harpetida

Harpetida is one of the nine orders of the extinct arthropod class Trilobita.

New!!: Trilobite and Harpetida · See more »

Head

A head is the part of an organism which usually includes the eyes, ears, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste, respectively.

New!!: Trilobite and Head · See more »

Heinz Christian Pander

Heinz Christian Pander, also Christian Heinrich Pander (24 July 1794 – 22 September 1865), was a Baltic German biologist and embryologist born in Riga.

New!!: Trilobite and Heinz Christian Pander · See more »

Holochroal eye

Holochroal eyes are compound eyes with many tiny lenses (sometimes more than 15,000, each 30-100μm, rarely larger).

New!!: Trilobite and Holochroal eye · See more »

Horseshoe crab

Horseshoe crabs are marine and brackish water arthropods of the family Limulidae, suborder Xiphosurida, and order Xiphosura.

New!!: Trilobite and Horseshoe crab · See more »

Hudson Bay

Hudson Bay (Inuktitut: Kangiqsualuk ilua, baie d'Hudson) (sometimes called Hudson's Bay, usually historically) is a large body of saltwater in northeastern Canada with a surface area of.

New!!: Trilobite and Hudson Bay · See more »

Hunsrück Slate

The Hunsrück Slate (Hunsrück-Schiefer) is a Lower Devonian lithostratigraphic unit, a type of rock strata, in the German regions of the Hunsrück and Taunus.

New!!: Trilobite and Hunsrück Slate · See more »

Hypostome (trilobite)

The hypostome is the hard mouthpart of trilobites found on the ventral side of the cephalon (head).

New!!: Trilobite and Hypostome (trilobite) · See more »

Iapetus Ocean

The Iapetus Ocean was an ocean that existed in the late Neoproterozoic and early Paleozoic eras of the geologic timescale (between 600 and 400 million years ago).

New!!: Trilobite and Iapetus Ocean · See more »

Instar

An instar (from the Latin "form", "likeness") is a developmental stage of arthropods, such as insects, between each moult (ecdysis), until sexual maturity is reached.

New!!: Trilobite and Instar · See more »

Integrative and Comparative Biology

Integrative and Comparative Biology is the scientific journal for the Society for Integrative and Comparative Biology (formerly the American Society of Zoologists).

New!!: Trilobite and Integrative and Comparative Biology · See more »

Irradiance

In radiometry, irradiance is the radiant flux (power) received by a surface per unit area.

New!!: Trilobite and Irradiance · See more »

Isole Tremiti

The Isole Tremiti are an archipelago in the Adriatic Sea, north of the Gargano Peninsula.

New!!: Trilobite and Isole Tremiti · See more »

Isopoda

Isopoda is an order of crustaceans that includes woodlice and their relatives.

New!!: Trilobite and Isopoda · See more »

Isotelus

Isotelus is a genus of asaphid trilobites from the middle and upper Ordovician period, fairly common in the Northeastern United States, northwest Manitoba, southwestern Quebec and southeastern Ontario.

New!!: Trilobite and Isotelus · See more »

Joachim Barrande

Joachim Barrande (11 August 1799 – 5 October 1883) was a French geologist and palaeontologist.

New!!: Trilobite and Joachim Barrande · See more »

Johann Ernst Immanuel Walch

Johann Ernst Immanuel Walch (29 August 1725 – 1 December 1778) was a German theologian, linguist, and naturalist from Jena.

New!!: Trilobite and Johann Ernst Immanuel Walch · See more »

Journal of Paleontology

The Journal of Paleontology is a peer-reviewed scientific journal covering the field of paleontology.

New!!: Trilobite and Journal of Paleontology · See more »

Kainops

Kainops is a genus of trilobites from the family Phacopidae, order Phacopida.

New!!: Trilobite and Kainops · See more »

Lachnostoma

Lachnostoma is an extinct genus from a well-known class of fossil marine arthropods, the trilobites.

New!!: Trilobite and Lachnostoma · See more »

Lagerstätte

A Lagerstätte (from Lager 'storage, lair' Stätte 'place'; plural Lagerstätten) is a sedimentary deposit that exhibits extraordinary fossils with exceptional preservation—sometimes including preserved soft tissues.

New!!: Trilobite and Lagerstätte · See more »

Lapidary

A lapidary (lapidarist, lapidarius) is an artist or artisan who forms stone, minerals, or gemstones into decorative items such as cabochons, engraved gems (including cameos), and faceted designs.

New!!: Trilobite and Lapidary · See more »

Late Devonian extinction

The Late Devonian extinction was one of five major extinction events in the history of the Earth's biota.

New!!: Trilobite and Late Devonian extinction · See more »

Laurentia

Laurentia or the North American Craton is a large continental craton that forms the ancient geological core of the North American continent.

New!!: Trilobite and Laurentia · See more »

Lemdadella

Lemdadella is an extinct genus of redlichiid trilobites that lived during the late Atdabanian stage, which lasted from 530 to 524 million years ago during the early part of the Cambrian Period.

New!!: Trilobite and Lemdadella · See more »

Lens (anatomy)

The lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina.

New!!: Trilobite and Lens (anatomy) · See more »

Lichida

Lichida is an order of typically spiny trilobite that lived from the Furongian to the Devonian period.

New!!: Trilobite and Lichida · See more »

Limestone

Limestone is a sedimentary rock, composed mainly of skeletal fragments of marine organisms such as coral, forams and molluscs.

New!!: Trilobite and Limestone · See more »

Limulus

Limulus is a genus of horseshoe crab, with one extant species, the Atlantic horseshoe crab (Limulus polyphemus).

New!!: Trilobite and Limulus · See more »

List of index fossils

Index fossils (also known as guide fossils or indicator fossils) are fossils used to define and identify geologic periods (or faunal stages).

New!!: Trilobite and List of index fossils · See more »

List of trilobite genera

This list of trilobites is a comprehensive listing of all genera that have ever been included in the Arthropod class Trilobita, excluding purely vernacular terms.

New!!: Trilobite and List of trilobite genera · See more »

List of U.S. state fossils

Most American states have made a state fossil designation, in many cases during the 1980s.

New!!: Trilobite and List of U.S. state fossils · See more »

Llandeilo

Llandeilo is a community and town in Carmarthenshire, Wales, situated at the crossing of the River Towy by the A483 on a 19th-century stone bridge.

New!!: Trilobite and Llandeilo · See more »

Llandrindod Wells

Llandrindod Wells (Llandrindod, "Trinity Parish") is a town and community in Powys, within the historic boundaries of Radnorshire, Wales.

New!!: Trilobite and Llandrindod Wells · See more »

Lobster

Lobsters comprise a family (Nephropidae, sometimes also Homaridae) of large marine crustaceans.

New!!: Trilobite and Lobster · See more »

Maotianshan Shales

The Maotianshan Shales are a series of Early Cambrian deposits in the Chiungchussu Formation, famous for their Konservat Lagerstätten, deposits known for the exceptional preservation of fossilized organisms or traces.

New!!: Trilobite and Maotianshan Shales · See more »

Marine regression

Marine regression is a geological process occurring when areas of submerged seafloor are exposed above the sea level.

New!!: Trilobite and Marine regression · See more »

Merriam-Webster

Merriam–Webster, Incorporated is an American company that publishes reference books which is especially known for its dictionaries.

New!!: Trilobite and Merriam-Webster · See more »

Mildred Adams Fenton

Mildred Adams Fenton (1899–1995) trained in paleontology and geology at the University of Iowa.

New!!: Trilobite and Mildred Adams Fenton · See more »

Morocco

Morocco (officially known as the Kingdom of Morocco, is a unitary sovereign state located in the Maghreb region of North Africa. It is one of the native homelands of the indigenous Berber people. Geographically, Morocco is characterised by a rugged mountainous interior, large tracts of desert and a lengthy coastline along the Atlantic Ocean and Mediterranean Sea. Morocco has a population of over 33.8 million and an area of. Its capital is Rabat, and the largest city is Casablanca. Other major cities include Marrakesh, Tangier, Salé, Fes, Meknes and Oujda. A historically prominent regional power, Morocco has a history of independence not shared by its neighbours. Since the foundation of the first Moroccan state by Idris I in 788 AD, the country has been ruled by a series of independent dynasties, reaching its zenith under the Almoravid dynasty and Almohad dynasty, spanning parts of Iberia and northwestern Africa. The Marinid and Saadi dynasties continued the struggle against foreign domination, and Morocco remained the only North African country to avoid Ottoman occupation. The Alaouite dynasty, the current ruling dynasty, seized power in 1631. In 1912, Morocco was divided into French and Spanish protectorates, with an international zone in Tangier, and regained its independence in 1956. Moroccan culture is a blend of Berber, Arab, West African and European influences. Morocco claims the non-self-governing territory of Western Sahara, formerly Spanish Sahara, as its Southern Provinces. After Spain agreed to decolonise the territory to Morocco and Mauritania in 1975, a guerrilla war arose with local forces. Mauritania relinquished its claim in 1979, and the war lasted until a cease-fire in 1991. Morocco currently occupies two thirds of the territory, and peace processes have thus far failed to break the political deadlock. Morocco is a constitutional monarchy with an elected parliament. The King of Morocco holds vast executive and legislative powers, especially over the military, foreign policy and religious affairs. Executive power is exercised by the government, while legislative power is vested in both the government and the two chambers of parliament, the Assembly of Representatives and the Assembly of Councillors. The king can issue decrees called dahirs, which have the force of law. He can also dissolve the parliament after consulting the Prime Minister and the president of the constitutional court. Morocco's predominant religion is Islam, and the official languages are Arabic and Berber, with Berber being the native language of Morocco before the Arab conquest in the 600s AD. The Moroccan dialect of Arabic, referred to as Darija, and French are also widely spoken. Morocco is a member of the Arab League, the Union for the Mediterranean and the African Union. It has the fifth largest economy of Africa.

New!!: Trilobite and Morocco · See more »

Morphology (biology)

Morphology is a branch of biology dealing with the study of the form and structure of organisms and their specific structural features.

New!!: Trilobite and Morphology (biology) · See more »

Nature (journal)

Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.

New!!: Trilobite and Nature (journal) · See more »

Nektaspida

Nektaspida (also called Naraoiida, Nectaspia and Nectaspida) is an extinct order of soft-bodied arthropods proposed by Raymond in 1920; its taxonomic status is uncertain.

New!!: Trilobite and Nektaspida · See more »

Nevadia

Nevadia is an extinct genus of trilobites, fossil marine arthropods, with species of average size (about long).

New!!: Trilobite and Nevadia · See more »

New Year

New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.

New!!: Trilobite and New Year · See more »

New Year's Day

New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.

New!!: Trilobite and New Year's Day · See more »

New Year's Eve

In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.

New!!: Trilobite and New Year's Eve · See more »

New York (state)

New York is a state in the northeastern United States.

New!!: Trilobite and New York (state) · See more »

Newfoundland and Labrador

Newfoundland and Labrador (Terre-Neuve-et-Labrador; Akamassiss; Newfoundland Irish: Talamh an Éisc agus Labradar) is the most easterly province of Canada.

New!!: Trilobite and Newfoundland and Labrador · See more »

Niles Eldredge

Niles Eldredge (born August 25, 1943) is a U.S. biologist and paleontologist, who, along with Stephen Jay Gould, proposed the theory of punctuated equilibrium in 1972.

New!!: Trilobite and Niles Eldredge · See more »

Notostraca

The order Notostraca comprises the single family Triopsidae, containing the tadpole shrimp or shield shrimp.

New!!: Trilobite and Notostraca · See more »

Odontopleurida

Odontopleurida is an order of very spinose trilobites closely related to the trilobites of the order Lichida.

New!!: Trilobite and Odontopleurida · See more »

Ohio

Ohio is a Midwestern state in the Great Lakes region of the United States.

New!!: Trilobite and Ohio · See more »

Olenellina

Olenellina is a suborder of the order Redlichiida of Trilobites that occurs about halfway during the Lower Cambrian, at the start of the stage called the Atdabanian.

New!!: Trilobite and Olenellina · See more »

Olenellus

Olenellus is an extinct genus of redlichiid trilobites, with species of average size (about long).

New!!: Trilobite and Olenellus · See more »

Olenoides

Olenoides was a trilobite from the Cambrian period.

New!!: Trilobite and Olenoides · See more »

Olenus (trilobite)

Olenus is a genus of Upper Cambrian ptychopariid trilobite.

New!!: Trilobite and Olenus (trilobite) · See more »

Ommatidium

The compound eyes of arthropods like insects, crustaceans and millipedes are composed of units called ommatidia (singular: ommatidium).

New!!: Trilobite and Ommatidium · See more »

Ontario

Ontario is one of the 13 provinces and territories of Canada and is located in east-central Canada.

New!!: Trilobite and Ontario · See more »

Ophiocoma wendtii

Ophiocoma wendtii is a species of brittle stars that inhabits coral reefs from Bermuda to Brazil.

New!!: Trilobite and Ophiocoma wendtii · See more »

Order (biology)

In biological classification, the order (ordo) is.

New!!: Trilobite and Order (biology) · See more »

Ordovician

The Ordovician is a geologic period and system, the second of six periods of the Paleozoic Era.

New!!: Trilobite and Ordovician · See more »

Ordovician–Silurian extinction events

The Ordovician–Silurian extinction events, when combined, are the second-largest of the five major extinction events in Earth's history in terms of percentage of genera that became extinct.

New!!: Trilobite and Ordovician–Silurian extinction events · See more »

Palaeogeography, Palaeoclimatology, Palaeoecology

Palaeogeography, Palaeoclimatology, Palaeoecology ("Palaeo3") is a peer-reviewed scientific journal publishing multidisciplinary studies and comprehensive reviews in the field of palaeoenvironmental geology.

New!!: Trilobite and Palaeogeography, Palaeoclimatology, Palaeoecology · See more »

Palaeontology (journal)

Palaeontology is one of the two scientific journals of the Palaeontological Association (the other being Papers in Palaeontology).

New!!: Trilobite and Palaeontology (journal) · See more »

PALAIOS

PALAIOS is a bimonthly academic journal dedicated to the study of the impact of life on Earth history, combining the fields of palaeontology and sedimentology.

New!!: Trilobite and PALAIOS · See more »

Paleobiology (journal)

Paleobiology is a scientific journal promoting the integration of biology and conventional paleontology, with emphasis placed on biological or paleobiological processes and patterns.

New!!: Trilobite and Paleobiology (journal) · See more »

Paleontology

Paleontology or palaeontology is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene Epoch (roughly 11,700 years before present).

New!!: Trilobite and Paleontology · See more »

Paleozoic

The Paleozoic (or Palaeozoic) Era (from the Greek palaios (παλαιός), "old" and zoe (ζωή), "life", meaning "ancient life") is the earliest of three geologic eras of the Phanerozoic Eon.

New!!: Trilobite and Paleozoic · See more »

Pannotia

Pannotia (from Greek: pan-, "all", -nótos, "south"; meaning "all southern land"), also known as Vendian supercontinent, Greater Gondwana, and the Pan-African supercontinent, was a relatively short-lived Neoproterozoic supercontinent that formed at the end of the Precambrian during the Pan-African orogeny (650–500 Ma) and broke apart 560 Ma with the opening of the Iapetus Ocean.

New!!: Trilobite and Pannotia · See more »

Paradoxides

Paradoxides is a genus of large to very large trilobites found throughout the world during the Mid Cambrian period.

New!!: Trilobite and Paradoxides · See more »

Paralejurus

Paralejurus is a genus of trilobite from the Late Silurian to the Middle Devonian of Africa and Europe.

New!!: Trilobite and Paralejurus · See more »

Parasitism

In evolutionary biology, parasitism is a relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.

New!!: Trilobite and Parasitism · See more »

Parvancorina

Parvancorina is a genus of shield-shaped bilaterally symmetrical fossil animal that lived in the late Ediacaran seafloor.

New!!: Trilobite and Parvancorina · See more »

PDF

The Portable Document Format (PDF) is a file format developed in the 1990s to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.

New!!: Trilobite and PDF · See more »

Pelagic zone

The pelagic zone consists of the water column of the open ocean, and can be further divided into regions by depth.

New!!: Trilobite and Pelagic zone · See more »

Peltura

Peltura is a genus of trilobites from the Upper Cambrian.

New!!: Trilobite and Peltura · See more »

Pennsylvania

Pennsylvania (Pennsylvania German: Pennsylvaani or Pennsilfaani), officially the Commonwealth of Pennsylvania, is a state located in the northeastern and Mid-Atlantic regions of the United States.

New!!: Trilobite and Pennsylvania · See more »

Permian

The Permian is a geologic period and system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic period 251.902 Mya.

New!!: Trilobite and Permian · See more »

Permian–Triassic extinction event

The Permian–Triassic (P–Tr or P–T) extinction event, colloquially known as the Great Dying, the End-Permian Extinction or the Great Permian Extinction, occurred about 252 Ma (million years) ago, forming the boundary between the Permian and Triassic geologic periods, as well as the Paleozoic and Mesozoic eras.

New!!: Trilobite and Permian–Triassic extinction event · See more »

Peronopsis

Peronopsis (meaning "broach-like" or possibly "boot-like") is a genus of trilobite restricted to the Middle Cambrian.

New!!: Trilobite and Peronopsis · See more »

Petroglyph

Petroglyphs are images created by removing part of a rock surface by incising, picking, carving, or abrading, as a form of rock art.

New!!: Trilobite and Petroglyph · See more »

Phacopida

Phacopida ("lens-face") is an order of trilobite that lived from the Late Cambrian to the Late Devonian.

New!!: Trilobite and Phacopida · See more »

Phacopidae

Phacopidae is a family of phacophid trilobites that ranges from the Lower Ordovician to the Upper Devonian, with representatives in all paleocontinents.

New!!: Trilobite and Phacopidae · See more »

Phacopina

The Phacopina comprise a suborder of the trilobite order Phacopida.

New!!: Trilobite and Phacopina · See more »

Phacops

Phacops is a genus of trilobites in the order Phacopida, family Phacopidae, that lived in Europe, northwestern Africa, North and South America and China from the Early until the very end of the Devonian, with a broader time range described from the Late Ordovician.

New!!: Trilobite and Phacops · See more »

Phacops rana

Phacops rana (Eldredgeops rana) is a species of trilobite from the middle Devonian period.

New!!: Trilobite and Phacops rana · See more »

Philosophical Transactions of the Royal Society

Philosophical Transactions, titled Philosophical Transactions of the Royal Society (often abbreviated as Phil. Trans.) from 1776, is a scientific journal published by the Royal Society.

New!!: Trilobite and Philosophical Transactions of the Royal Society · See more »

Phylogenetic tree

A phylogenetic tree or evolutionary tree is a branching diagram or "tree" showing the evolutionary relationships among various biological species or other entities—their phylogeny—based upon similarities and differences in their physical or genetic characteristics.

New!!: Trilobite and Phylogenetic tree · See more »

Phylogenetics

In biology, phylogenetics (Greek: φυλή, φῦλον – phylé, phylon.

New!!: Trilobite and Phylogenetics · See more »

Plankton

Plankton (singular plankter) are the diverse collection of organisms that live in large bodies of water and are unable to swim against a current.

New!!: Trilobite and Plankton · See more »

Plate tectonics

Plate tectonics (from the Late Latin tectonicus, from the τεκτονικός "pertaining to building") is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, since tectonic processes began on Earth between 3 and 3.5 billion years ago.

New!!: Trilobite and Plate tectonics · See more »

Powys

Powys is a principal area, a county and one of the preserved counties of Wales.

New!!: Trilobite and Powys · See more »

Precambrian

The Precambrian (or Pre-Cambrian, sometimes abbreviated pЄ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon.

New!!: Trilobite and Precambrian · See more »

Predation

Predation is a biological interaction where a predator (a hunting animal) kills and eats its prey (the organism that is attacked).

New!!: Trilobite and Predation · See more »

Pricyclopyge

Pricyclopyge is a genus of trilobites assigned to the Cyclopygidae family that occurs throughout the Ordovician.

New!!: Trilobite and Pricyclopyge · See more »

Proceedings of the National Academy of Sciences of the United States of America

Proceedings of the National Academy of Sciences of the United States of America (PNAS) is the official scientific journal of the National Academy of Sciences, published since 1915.

New!!: Trilobite and Proceedings of the National Academy of Sciences of the United States of America · See more »

Proetida

Proetida is an order of trilobite that lived from the Ordovician to the Permian.

New!!: Trilobite and Proetida · See more »

Progenitor

In genealogy, the progenitor (rarer: primogenitor; Stammvater or Ahnherr) is the – sometimes legendary – founder of a family, line of descent, clan or tribe, noble house or people group.

New!!: Trilobite and Progenitor · See more »

Ptychopariida

Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known.

New!!: Trilobite and Ptychopariida · See more »

Punctuated equilibrium

Punctuated equilibrium (also called punctuated equilibria) is a theory in evolutionary biology which proposes that once species appear in the fossil record the population will become stable, showing little evolutionary change for most of its geological history.

New!!: Trilobite and Punctuated equilibrium · See more »

Pygidium

The pygidium (plural pygidia) is the posterior body part or shield of crustaceans and some other arthropods, such as insects and the extinct trilobites.

New!!: Trilobite and Pygidium · See more »

Queensland Museum

The Queensland Museum is the state museum of Queensland, Australia.

New!!: Trilobite and Queensland Museum · See more »

Raphiophoridae

Raphiophoridae is a family of small to average-sized trilobites that first occurred at the start of the Ordovician and became extinct at the end of the Middle Silurian.

New!!: Trilobite and Raphiophoridae · See more »

Redlichiida

Redlichiida is an order of trilobites, a group of extinct marine arthropods.

New!!: Trilobite and Redlichiida · See more »

Redlichiina

Redlichiina is a suborder of the order Redlichiida of Trilobites.

New!!: Trilobite and Redlichiina · See more »

Refractive index

In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.

New!!: Trilobite and Refractive index · See more »

René Descartes

René Descartes (Latinized: Renatus Cartesius; adjectival form: "Cartesian"; 31 March 1596 – 11 February 1650) was a French philosopher, mathematician, and scientist.

New!!: Trilobite and René Descartes · See more »

Rome, New York

Rome is a city in Oneida County, New York, United States, located in the central part of the state.

New!!: Trilobite and Rome, New York · See more »

Royal Society of Edinburgh

The Royal Society of Edinburgh is Scotland's national academy of science and letters.

New!!: Trilobite and Royal Society of Edinburgh · See more »

Rusophycus

Rusophycus is a trace fossil allied to Cruziana.

New!!: Trilobite and Rusophycus · See more »

Russia, New York

Russia is a U.S. town in Herkimer County, New York.

New!!: Trilobite and Russia, New York · See more »

Scavenger

Scavenging is both a carnivorous and a herbivorous feeding behavior in which the scavenger feeds on dead animal and plant material present in its habitat.

New!!: Trilobite and Scavenger · See more »

Science (journal)

Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.

New!!: Trilobite and Science (journal) · See more »

Selenopeltis

Selenopeltis is an extinct genus of odontopleurid trilobites in the family Odontopleuridae.

New!!: Trilobite and Selenopeltis · See more »

Siberia

Siberia (a) is an extensive geographical region, and by the broadest definition is also known as North Asia.

New!!: Trilobite and Siberia · See more »

Silurian

The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago (Mya), to the beginning of the Devonian Period, Mya.

New!!: Trilobite and Silurian · See more »

Speciation

Speciation is the evolutionary process by which populations evolve to become distinct species.

New!!: Trilobite and Speciation · See more »

Spherical aberration

Spherical aberration is an optical effect observed in an optical device (lens, mirror, etc.) that occurs due to the increased refraction of light rays when they strike a lens or a reflection of light rays when they strike a mirror near its edge, in comparison with those that strike close to the centre.

New!!: Trilobite and Spherical aberration · See more »

Spriggina

Spriggina is a genus of early bilaterian animals whose relationship to living animals is unclear.

New!!: Trilobite and Spriggina · See more »

Stratigraphy

Stratigraphy is a branch of geology concerned with the study of rock layers (strata) and layering (stratification).

New!!: Trilobite and Stratigraphy · See more »

Subfamily

In biological classification, a subfamily (Latin: subfamilia, plural subfamiliae) is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus.

New!!: Trilobite and Subfamily · See more »

Symbiosis

Symbiosis (from Greek συμβίωσις "living together", from σύν "together" and βίωσις "living") is any type of a close and long-term biological interaction between two different biological organisms, be it mutualistic, commensalistic, or parasitic.

New!!: Trilobite and Symbiosis · See more »

Tagma (biology)

In biology a tagma (Greek: τάγμα, plural tagmata – τάγματα) is a specialized grouping of multiple segments or metameres into a coherently functional morphological unit.

New!!: Trilobite and Tagma (biology) · See more »

Taxon

In biology, a taxon (plural taxa; back-formation from taxonomy) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit.

New!!: Trilobite and Taxon · See more »

Taxonomic rank

In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in a taxonomic hierarchy.

New!!: Trilobite and Taxonomic rank · See more »

Taxonomy (biology)

Taxonomy is the science of defining and naming groups of biological organisms on the basis of shared characteristics.

New!!: Trilobite and Taxonomy (biology) · See more »

Telson

The telson is the posterior-most division of the body of an arthropod.

New!!: Trilobite and Telson · See more »

Thorax

The thorax or chest (from the Greek θώραξ thorax "breastplate, cuirass, corslet" via thorax) is a part of the anatomy of humans and various other animals located between the neck and the abdomen.

New!!: Trilobite and Thorax · See more »

Trace fossil

A trace fossil, also ichnofossil (ιχνος ikhnos "trace, track"), is a geological record of biological activity.

New!!: Trilobite and Trace fossil · See more »

Treatise on Invertebrate Paleontology

The Treatise on Invertebrate Paleontology (or TIP) published by the Geological Society of America and the University of Kansas Press, is a definitive multi-authored work of some 50 volumes, written by more than 300 paleontologists, and covering every phylum, class, order, family, and genus of fossil and extant (still living) invertebrate animals.

New!!: Trilobite and Treatise on Invertebrate Paleontology · See more »

Triarthrus

Triarthrus is a genus of Upper Ordovician ptychopariid trilobite found in New York, Ohio, Kentucky, and Indiana, eastern and northern Canada, China and Scandinavia.

New!!: Trilobite and Triarthrus · See more »

Trilobite

Trilobites (meaning "three lobes") are a fossil group of extinct marine arachnomorph arthropods that form the class Trilobita.

New!!: Trilobite and Trilobite · See more »

Triproetus

Triroetus is a genus of proetid trilobite found in Upper Carboniferous-aged marine strata in Russia, and Lower Permian-aged strata of Thailand, Malaysia, Spitzbergen, Yukon Territory, and Middle Permian-aged marine strata of Oman and Texas.

New!!: Trilobite and Triproetus · See more »

United Kingdom

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain,Usage is mixed with some organisations, including the and preferring to use Britain as shorthand for Great Britain is a sovereign country in western Europe.

New!!: Trilobite and United Kingdom · See more »

University of Chicago Press

The University of Chicago Press is the largest and one of the oldest university presses in the United States.

New!!: Trilobite and University of Chicago Press · See more »

Utah

Utah is a state in the western United States.

New!!: Trilobite and Utah · See more »

Ute people

Ute people are Native Americans of the Ute tribe and culture and are among the Great Basin classification of Indigenous People.

New!!: Trilobite and Ute people · See more »

Vintage Books

Vintage Books is a publishing imprint established in 1954 by Alfred A. Knopf.

New!!: Trilobite and Vintage Books · See more »

Walcott–Rust quarry

The Walcott–Rust quarry is an excellent example of an obrution (rapid burial or "smothered") Lagerstätte.

New!!: Trilobite and Walcott–Rust quarry · See more »

Wales

Wales (Cymru) is a country that is part of the United Kingdom and the island of Great Britain.

New!!: Trilobite and Wales · See more »

Walliserops

Walliserops (named after Prof. O. Walliser of the University of Göttingen) is a genus of spinose phacopid trilobite, of the family Acastidae, found in Lower to Middle Devonian age rocks from the Anti-Atlas Mountains of Morocco.

New!!: Trilobite and Walliserops · See more »

Welsh Marches

The Welsh Marches (Y Mers) is an imprecisely defined area along and around the border between England and Wales in the United Kingdom.

New!!: Trilobite and Welsh Marches · See more »

Wenlock Group

The Wenlock Group (Wenlockian), in geology, is the middle series of strata in the Silurian (Upper Silurian) of Great Britain.

New!!: Trilobite and Wenlock Group · See more »

West Midlands (county)

The West Midlands is a metropolitan county and city region in western-central England with a 2014 estimated population of 2,808,356, making it the second most populous county in England.

New!!: Trilobite and West Midlands (county) · See more »

Western New York

Western New York is the westernmost region of the state of New York.

New!!: Trilobite and Western New York · See more »

Weymouthia (trilobite)

Weymouthia is an extinct genus of eodiscinid agnostid trilobites, which lived at the end of the Lower Cambrian, in what are now the eastern United States, England, Siberia and China.

New!!: Trilobite and Weymouthia (trilobite) · See more »

Wheeler Shale

The Wheeler Shale (named by Charles Walcott) is a Cambrian (''c.'' 507 Ma) fossil locality world famous for prolific agnostid and Elrathia kingii trilobite remains (even though many areas are barren of fossils) and represents a Konzentrat-Lagerstätten.

New!!: Trilobite and Wheeler Shale · See more »

Wisconsin

Wisconsin is a U.S. state located in the north-central United States, in the Midwest and Great Lakes regions.

New!!: Trilobite and Wisconsin · See more »

Wren's Nest

The Wren's Nest is a geological Site of Special Scientific Interest in the Dudley Metropolitan Borough, north west of the town centre of Dudley, in the West Midlands of England.

New!!: Trilobite and Wren's Nest · See more »

Xiuqiella

Xiuqiella rectangula is a corynexochid trilobite that lived in what is now Chongqing, China during the Nangaoian stage of the Cambrian Period, near the end of Cambrian Stage 3, which lasted from approximately 516 to 513 million years ago.

New!!: Trilobite and Xiuqiella · See more »

Yiliangella

Yiliangella is an extinct genus from a well-known class of fossil marine arthropods, the trilobites.

New!!: Trilobite and Yiliangella · See more »

Yiliangellina

Yiliangellina is an extinct genus from a well-known class of fossil marine arthropods, the trilobites.

New!!: Trilobite and Yiliangellina · See more »

Yonne

Yonne is a French department named after the river Yonne.

New!!: Trilobite and Yonne · See more »

Yukoniidae

Yukoniidae is a family of trilobites, belonging to the Eodiscina, small trilobites with headshield and tailshield of equal size and shape, and with two or three thorax segments.

New!!: Trilobite and Yukoniidae · See more »

Yunnanocephalus

Yunnanocephalus is a genus of ptychopariid trilobite.

New!!: Trilobite and Yunnanocephalus · See more »

2018

2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.

New!!: Trilobite and 2018 · See more »

2019

2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.

New!!: Trilobite and 2019 · See more »

Redirects here:

Axial lobe, Enrollment (trilobite), Facial suture, Facial suture (trilobite anatomy), Facial suture (trilobite), Facial sutures, Genal angle, Gonatoparian, Gonatoparian suture, Gonatoparian sutures, Hypoparian, Hypoparian suture, Hypoparian sutures, Isopygy, Marginal suture, Marginal sutures, Opisthoparian, Opisthoparian suture, Opisthoparian sutures, Paladin (trilobite), Penn dixie, Pleural lobe, Proparian, Proparian suture, Proparian sutures, Trilobita, Trilobites, Trilobitomorpha.

References

[1] https://en.wikipedia.org/wiki/Trilobite

OutgoingIncoming
Hey! We are on Facebook now! »