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100 relations: Adam Sedgwick, Age (geology), Allied Publishers, Animal, Anomalocaris, Archaeocyatha, Arthropod, Baltica, Baltoscandia, Biological soil crust, Biostratigraphy, Bioturbation, Bryozoa, Burgess Shale, Cambria, Cambrian explosion, Cambrian Series 2, Cambrian Series 3, Cambrian substrate revolution, Cambrian–Ordovician extinction event, Carbon-13, Chambers Dictionary, Charnia, Chitin, Choanoflagellate, Climactichnites, Cloudinidae, Continent, Death Valley, Dresbachian, Earth-Science Reviews, Ecosystem, Ediacaran, Ediacaran biota, Embryophyte, End-Botomian mass extinction, Eos (magazine), Epoch (geology), Euthycarcinoidea, Federal Geographic Data Committee, Franconian (stage), Furongian, Geological period, Global Boundary Stratotype Section and Point, Gondwana, Hallucigenia, Hydrogen sulfide, Hypoxia (environmental), Ice cap, Inland sea (geology), ..., Lagerstätte, Latin, Laurentia, Life, List of fossil sites, Marine transgression, Microbial mat, Mollusca, Monophyly, Multicellular organism, Namacalathus, Namibia, Newfoundland and Labrador, Onychophora, Opabinia, Ordovician, Ordovician radiation, Paleozoic, Pannotia, Phylum, Pikaia, Plate reconstruction, Poleta Formation, Precambrian, Protichnites, Protist, Seabed, Series (stratigraphy), Siberia (continent), Slug, Small shelly fauna, Snowball Earth, South Pole, Speciation, Stage (stratigraphy), Stephen Jay Gould, Stromatolite, Sub-Cambrian peneplain, Supercontinent, Terreneuvian, Trace fossil, Trempealeauan, Treptichnus pedum, Trilobite, Trilobite zone, Type locality (geology), Unicellular organism, Unicode, Wales, Welsh language. Expand index (50 more) »
Adam Sedgwick
Adam Sedgwick (22 March 1785 – 27 January 1873) was a British priest and geologist, one of the founders of modern geology.
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Age (geology)
A geologic age is a subdivision of geologic time that divides an epoch into smaller parts.
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Allied Publishers
Allied Publishers is an Indian-based academic and literary publishing house, established in 1934 by M. Graham Brash, the Company was acquired by the late Mr.
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Animal
Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia.
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Anomalocaris
Anomalocaris ("abnormal shrimp") is an extinct genus of anomalocaridid, a family of animals thought to be closely related to ancestral arthropods.
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Archaeocyatha
Archaeocyatha (or archaeocyathids “ancient cups”) is a taxon of extinct, sessile, reef-building marine organisms of warm tropical and subtropical waters that lived during the early (lower) Cambrian Period.
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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.
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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.
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Baltoscandia
The Baltoscandian Confederation or Baltoscandia is a geopolitical concept of a Baltic–Scandinavian union (consisting of Sweden, Denmark, Norway, Iceland, Finland, Estonia, Latvia, and Lithuania).
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Biological soil crust
Biological soil crusts are communities of living organisms on the soil surface in arid and semi-arid ecosystems.
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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.
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Bioturbation
Bioturbation is defined as the reworking of soils and sediments by animals or plants.
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Bryozoa
Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of aquatic invertebrate animals.
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Burgess Shale
The Burgess Shale is a fossil-bearing deposit exposed in the Canadian Rockies of British Columbia, Canada.
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Cambria
Cambria is a name for Wales, being the Latinised form of the Welsh name for the country, Cymru.
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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.
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Cambrian Series 2
Cambrian Series 2 is the unnamed 2nd series of the Cambrian.
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Cambrian Series 3
Cambrian Series 3 is the still unnamed 3rd Series of the Cambrian.
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Cambrian substrate revolution
The "Cambrian substrate revolution" or "Agronomic revolution",Seilacher and Pflüger, 1994 Seilacher, A., Pflüger, F., 1994.
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Cambrian–Ordovician extinction event
The Cambrian–Ordovician extinction event occurred approximately 488 million years ago (m.y.a.). This early Phanerozoic Eon extinction event eliminated many brachiopods and conodonts, and severely reduced the number of trilobite species.
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Carbon-13
Carbon-13 (13C) is a natural, stable isotope of carbon with a nucleus containing six protons and seven neutrons.
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Chambers Dictionary
The Chambers Dictionary (TCD) was first published by William and Robert Chambers as Chambers's English Dictionary in 1872.
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Charnia
Charnia is a genus of frond-like Ediacaran lifeforms with segmented, leaf-like ridges branching alternately to the right and left from a zig-zag medial suture (thus exhibiting glide reflection, or opposite isometry).
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Chitin
Chitin (C8H13O5N)n, a long-chain polymer of ''N''-acetylglucosamine, is a derivative of glucose.
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Choanoflagellate
The choanoflagellates are a group of free-living unicellular and colonial flagellate eukaryotes considered to be the closest living relatives of the animals.
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Climactichnites
Climactichnites is an enigmatic, Cambrian fossil formed on or within sandy tidal flats around.
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Cloudinidae
The cloudinids, an early metazoan family containing the genera Acuticocloudina, Cloudina and Conotubus, lived in the late Ediacaran period and became extinct at the base of the Cambrian. They formed millimetre-scale conical fossils consisting of calcareous cones nested within one another; the appearance of the organism itself remains unknown. The name Cloudina honors the 20th-century geologist and paleontologist Preston Cloud. Cloudinids comprise two genera: Cloudina itself is mineralized, whereas Conotubus is at best weakly mineralized, whilst sharing the same "funnel-in-funnel" construction. Cloudinids had a wide geographic range, reflected in the present distribution of localities in which their fossils are found, and are an abundant component of some deposits. They never appear in the same layers as soft-bodied Ediacaran biota, but the fact that some sequences contain cloudinids and Ediacaran biota in alternating layers suggests that these groups had different environmental preferences. It has been suggested that cloudinids lived embedded in microbial mats, growing new cones to avoid being buried by silt. However no specimens have been found embedded in mats, and their mode of life is still an unresolved question. The classification of the cloudinids has proved difficult: they were initially regarded as polychaete worms, and then as coral-like cnidarians on the basis of what look like buds on some specimens. Current scientific opinion is divided between classifying them as polychaetes and regarding it as unsafe to classify them as members of any broader grouping. Cloudinids are important in the history of animal evolution for two reasons. They are among the earliest and most abundant of the small shelly fossils with mineralized skeletons, and therefore feature in the debate about why such skeletons first appeared in the Late Ediacaran. The most widely supported answer is that their shells are a defense against predators, as some Cloudina specimens from China bear the marks of multiple attacks, which suggests they survived at least a few of them. The holes made by predators are approximately proportional to the size of the Cloudina specimens, and Sinotubulites fossils, which are often found in the same beds, have so far shown no such holes. These two points suggest that predators attacked in a selective manner, and the evolutionary arms race which this indicates is commonly cited as a cause of the Cambrian explosion of animal diversity and complexity.
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Continent
A continent is one of several very large landmasses of the world.
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Death Valley
Death Valley is a desert valley located in Eastern California, in the northern Mojave Desert bordering the Great Basin Desert.
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Dresbachian
The Dresbachian is a Maentwrogian regional stage of North America, lasting from 501 to 497 million years ago.
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Earth-Science Reviews
Earth-Science Reviews is a monthly peer-reviewed scientific journal published by Elsevier.
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Ecosystem
An ecosystem is a community made up of living organisms and nonliving components such as air, water, and mineral soil.
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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.
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Ediacaran biota
The Ediacaran (formerly Vendian) biota consisted of enigmatic tubular and frond-shaped, mostly sessile organisms that lived during the Ediacaran Period (ca. 635–542 Mya).
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Embryophyte
The Embryophyta are the most familiar group of green plants that form vegetation on earth.
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End-Botomian mass extinction
The Botomian stage of the Early Cambrian epoch lasted from ca 524 to ca 517 million years ago.
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Eos (magazine)
Eos, Transactions, American Geophysical Union, is a weekly magazine of Earth science published by John Wiley & Sons for the American Geophysical Union (AGU).
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Epoch (geology)
In geochronology, an epoch is a subdivision of the geologic timescale that is longer than an age but shorter than a period.
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Euthycarcinoidea
Euthycarcinoidea was an enigmatic group of possibly amphibious arthropods that ranged from Cambrian to Triassic times.
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Federal Geographic Data Committee
The Federal Geographic Data Committee (FGDC) is a United States government committee which promotes the coordinated development, use, sharing, and dissemination of geospatial data on a national basis.
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Franconian (stage)
The Franconian is the middle stage of the Upper or Late Cambrian in North America, equivalent to the Chinese Changshanian with a span of nearly 4.5 million years, from about 497 to 492.5 Ma.
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Furongian
The Furongian is the fourth and final series of the Cambrian.
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Geological period
A geological period is one of several subdivisions of geologic time enabling cross-referencing of rocks and geologic events from place to place.
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Global Boundary Stratotype Section and Point
A Global Boundary Stratotype Section and Point, abbreviated GSSP, is an internationally agreed upon reference point on a stratigraphic section which defines the lower boundary of a stage on the geologic time scale.
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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).
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Hallucigenia
Hallucigenia is a genus of Cambrian xenusiids known from articulated fossils in Burgess Shale-type deposits in Canada and China, and from isolated spines around the world.
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Hydrogen sulfide
Hydrogen sulfide is the chemical compound with the chemical formula H2S.
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Hypoxia (environmental)
Hypoxia refers to low oxygen conditions.
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Ice cap
An ice cap is a mass of ice that covers less than 50,000 km2 of land area (usually covering a highland area).
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Inland sea (geology)
An inland sea (also known as an epeiric sea or an epicontinental sea) is a shallow sea that covers central areas of continents during periods of high sea level that result in marine transgressions.
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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.
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Latin
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
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Laurentia
Laurentia or the North American Craton is a large continental craton that forms the ancient geological core of the North American continent.
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Life
Life is a characteristic that distinguishes physical entities that do have biological processes, such as signaling and self-sustaining processes, from those that do not, either because such functions have ceased, or because they never had such functions and are classified as inanimate.
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List of fossil sites
This list of fossil sites is a worldwide list of localities known well for the presence of fossils.
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Marine transgression
A marine transgression is a geologic event during which sea level rises relative to the land and the shoreline moves toward higher ground, resulting in flooding.
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Microbial mat
A microbial mat is a multi-layered sheet of microorganisms, mainly bacteria and archaea.
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Mollusca
Mollusca is a large phylum of invertebrate animals whose members are known as molluscs or mollusksThe formerly dominant spelling mollusk is still used in the U.S. — see the reasons given in Gary Rosenberg's.
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Monophyly
In cladistics, a monophyletic group, or clade, is a group of organisms that consists of all the descendants of a common ancestor.
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Multicellular organism
Multicellular organisms are organisms that consist of more than one cell, in contrast to unicellular organisms.
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Namacalathus
Namacalathus is a problematic metazoan fossil occurring in the latest Ediacaran.
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Namibia
Namibia, officially the Republic of Namibia (German:; Republiek van Namibië), is a country in southern Africa whose western border is the Atlantic Ocean.
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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.
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Onychophora
Onychophora (from Ancient Greek, onyches, "claws"; and pherein, "to carry"), commonly known as velvet worms (due to their velvety texture and somewhat wormlike appearance) or more ambiguously as peripatus (after the first described genus, Peripatus), is a phylum of elongate, soft-bodied, many-legged panarthropods.
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Opabinia
Opabinia regalis is an extinct, stem group arthropod found in the Middle Cambrian Burgess Shale Lagerstätte of British Columbia, Canada.
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Ordovician
The Ordovician is a geologic period and system, the second of six periods of the Paleozoic Era.
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Ordovician radiation
The Ordovician radiation, or the great Ordovician biodiversification event (GOBE), was an evolutionary radiation of animal life throughout the Ordovician period, 40 million years after the Cambrian explosion, whereby the distinctive Cambrian fauna fizzled out to be replaced with a Palaeozoic fauna rich in suspension feeder and pelagic animals.
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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.
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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.
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Phylum
In biology, a phylum (plural: phyla) is a level of classification or taxonomic rank below Kingdom and above Class.
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Pikaia
Pikaia gracilens is an extinct cephalochordate animal known from the Middle Cambrian Burgess Shale of British Columbia.
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Plate reconstruction
Plate reconstruction is the process of reconstructing the positions of tectonic plates relative to each other (relative motion) or to other reference frames, such as the earth's magnetic field or groups of hotspots, in the geological past.
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Poleta Formation
The Poleta Formation is a geological unit known for the exceptional fossil preservation in the Indian Springs Lagerstätte, located in eastern California and Nevada.
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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.
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Protichnites
Protichnites is an ichnogenus of trace fossil consisting of the imprints made by the walking activity of certain arthropods.
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Protist
A protist is any eukaryotic organism that has cells with nuclei and is not an animal, plant or fungus.
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Seabed
The seabed (also known as the seafloor, sea floor, or ocean floor) is the bottom of the ocean.
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Series (stratigraphy)
Series are subdivisions of rock layers based on the age of the rock and formally defined by international conventions of the geological timescale.
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Siberia (continent)
Siberia, also known as Angaraland (or simply Angara) and Angarida, is an ancient craton located in the heart of Siberia.
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Slug
Slug, or land slug, is a common name for any apparently shell-less terrestrial gastropod mollusc.
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Small shelly fauna
The small shelly fauna, small shelly fossils (SSF), or early skeletal fossils (ESF) are mineralized fossils, many only a few millimetres long, with a nearly continuous record from the latest stages of the Ediacaran to the end of the Early Cambrian Period.
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Snowball Earth
The Snowball Earth hypothesis proposes that Earth surface's became entirely or nearly entirely frozen at least once, sometime earlier than 650 Mya (million years ago).
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South Pole
The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is one of the two points where the Earth's axis of rotation intersects its surface.
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Speciation
Speciation is the evolutionary process by which populations evolve to become distinct species.
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Stage (stratigraphy)
In chronostratigraphy, a stage is a succession of rock strata laid down in a single age on the geologic timescale, which usually represents millions of years of deposition.
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Stephen Jay Gould
Stephen Jay Gould (September 10, 1941 – May 20, 2002) was an American paleontologist, evolutionary biologist, and historian of science.
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Stromatolite
Stromatolites or stromatoliths (from Greek στρῶμα strōma "layer, stratum" (GEN στρώματος strōmatos), and λίθος lithos "rock") are layered mounds, columns, and sheet-like sedimentary rocks that were originally formed by the growth of layer upon layer of cyanobacteria, a single-celled photosynthesizing microbe.
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Sub-Cambrian peneplain
The sub-Cambrian peneplain is an ancient, extremely flat, erosion surface (peneplain) that has been exhumed and exposed by erosion from under Cambrian strata over large swathes of Fennoscandia.
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Supercontinent
In geology, a supercontinent is the assembly of most or all of Earth's continental blocks or cratons to form a single large landmass.
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Terreneuvian
The Terreneuvian is the lowermost and oldest series of the Cambrian geological system.
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Trace fossil
A trace fossil, also ichnofossil (ιχνος ikhnos "trace, track"), is a geological record of biological activity.
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Trempealeauan
The Trempealeauan is the upper or latest stage of the Upper or Late Cambrian in North America, spanning about 4 million years from about 492.5 to 488.3 m.y.a., equivalent to the Fengshanian of China.
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Treptichnus pedum
Treptichnus pedum (formerly named Phycodes pedum, Manykodes pedum by J. Dzik, and also known as Trichophycus pedum) is the preserved burrow of an animal rather than a fossil of that animal.
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Trilobite
Trilobites (meaning "three lobes") are a fossil group of extinct marine arachnomorph arthropods that form the class Trilobita.
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Trilobite zone
Trilobites are used as index fossils to subdivide the Cambrian period.
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Type locality (geology)
Type locality, also called type area, type site, or type section, is the locality where a particular rock type, stratigraphic unit or mineral species is first identified.
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Unicellular organism
A unicellular organism, also known as a single-celled organism, is an organism that consists of only one cell, unlike a multicellular organism that consists of more than one cell.
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Unicode
Unicode is a computing industry standard for the consistent encoding, representation, and handling of text expressed in most of the world's writing systems.
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Wales
Wales (Cymru) is a country that is part of the United Kingdom and the island of Great Britain.
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Welsh language
Welsh (Cymraeg or y Gymraeg) is a member of the Brittonic branch of the Celtic languages.
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Acadian Epoch, Acadian epoch, Aksayan, Amgan, Ayusokkanian, Batyrbayan, Boomerangian, Cambrian (Geology), Cambrian Era, Cambrian Period, Cambrian System, Cambrian climate, Cambrian era, Cambrian fauna, Cambrian period, Cambrium, Changlangpuan, Croisian, Croixian, Delamaran, Dolgellian, Dyeran, Early Cambrian, Festiniogian, Florian stage, Ibexian, Idamean, Infra-Cambrian, Lenian, Longwangmioan, Lower Cambrian, Maentwrogian, Maozhangian, Marioneth, Marjuman, Marjumian, Mayan stage, Meishuchuan, Meishucunian, Mindyallan, Montezuman, Nemakit-Daldynian, Nemakit–Daldynian, Ordian, Payntonian, Potsdamian, Qungzusian, Sakian, Steptoan, Sunwaptan, Templetonian, Tommotian Age, Tommotian age, Tommotian fauna, Undillian, Zhungxian, Zuzhuangian.
References
[1] https://en.wikipedia.org/wiki/Cambrian
