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

Chordate

+ Save concept

A chordate is an animal belonging to the phylum Chordata; chordates possess a notochord, a hollow dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail, for at least some period of their life cycle. [1]

174 relations: Acanthodii, Acorn worm, Actinistia, Actinopterygii, Agnatha, Ambulacraria, Amniote, Amphibian, Anaspida, Animal, Anus, Archosauromorpha, Ascidiacea, Aspiraculata, Avemetatarsalia, BBC, Biochemistry, BioEssays, Bird, Blue whale, Body plan, Burgess Shale, Calcite, Cambrian, Cambrian explosion, Cartilage, Cephalaspidomorphi, Cephalochordate, Chondrichthyes, Chordate, Chordate genomics, Cilium, Circulatory system, Clade, Cladistics, Class (biology), Cnidaria, Coelom, Colony (biology), Conodont, Craniate, Crinoid, Crurotarsi, Cyclostomata, Cylinder, Dagger (typography), Deuterostome, Dorsal nerve cord, Echinoderm, Ediacaran, ..., Embryology, Endostyle, Ernietta, Ernst Haeckel, Esophagus, Evolution, Filter feeder, Fish, Fishes of the World, Fossil, Gastrointestinal tract, Gill, Gill slit, Giovanni Battista Cirri, Gnathostomata, Gonad, Graptolithina, Hacksaw, Hagfish, Haikouella, Haikouichthys, Hemichordate, Hepatic caecum, Holocene, Human, Human mouth, Hyperoartia, Incertae sedis, International Code of Zoological Nomenclature, Iodine, Jane Reece, Jaw, Jellyfish, Kimberella, Kryptopterus vitreolus, Lamprey, Lancelet, Larva, Larvacea, Lepidosauromorpha, Linnaean taxonomy, List of chordate orders, Liver, Lizard, Lungfish, Mammal, Maotianshan Shales, Metamerism (biology), Michael Benton, Molecular clock, Molecular phylogenetics, Monophyly, Mosasaur, Mucus, Myllokunmingia, Myllokunmingiidae, Neil Campbell (scientist), Nerve, Nervous system, Neural tube, Neurocranium, Notochord, Osteichthyes, Osteostraci, Ovary, Palaeospondylus, Paraphyly, Peregrine falcon, Peritoneum, Pharyngeal slit, Pharynx, Philippe Janvier, Phylogenetic tree, Phylum, Pikaia, Placodermi, Plankton, Proboscis, Protostome, Pteraspidomorphi, Pterobranchia, Reptile, Rhabdotubus, Ribosome, RNA, Salp, Sarcopterygii, Sauropsida, Sea cucumber, Sea urchin, Sediment, Siphon, Sister group, Skeleton, Skull, Snake, Spinal cord, Starfish, Symmetry in biology, Synapsid, Tadpole, Tail, Taxonomy of invertebrates (Brusca & Brusca, 2003), Terreneuvian, Testicle, Tetrapod, Thaliacea, Thelodonti, Throat, Thyroid, Tuatara, Tube feet, Tunica (biology), Tunicate, Vertebra, Vertebral column, Vertebrate, Vertebrate Palaeontology (Benton), Vetulicolia, Water vascular system, William Bateson, Yunnanozoon, Zhongjianichthys, Zhongxiniscus. Expand index (124 more) »

Acanthodii

Acanthodii or acanthodians (sometimes called spiny sharks) is a paraphyletic class of extinct teleostome fish, sharing features with both bony fish and cartilaginous fish.

New!!: Chordate and Acanthodii · See more »

Acorn worm

The acorn worms or Enteropneusta are a hemichordate class of invertebrates consisting of one order of the same name.

New!!: Chordate and Acorn worm · See more »

Actinistia

Actinistia is a subclass of mostly fossil lobe-finned fishes.

New!!: Chordate and Actinistia · See more »

Actinopterygii

Actinopterygii, or the ray-finned fishes, constitute a class or subclass of the bony fishes.

New!!: Chordate and Actinopterygii · See more »

Agnatha

Agnatha (Greek, "no jaws") is a superclass of jawless fish in the phylum Chordata, subphylum Vertebrata, consisting of both present (cyclostomes) and extinct (conodonts and ostracoderms) species.

New!!: Chordate and Agnatha · See more »

Ambulacraria

Ambulacraria or Coelomopora is a clade of invertebrate phyla which includes echinoderms and hemichordates; a member of this group is called an ambulacrarian.

New!!: Chordate and Ambulacraria · See more »

Amniote

Amniotes (from Greek ἀμνίον amnion, "membrane surrounding the fetus", earlier "bowl in which the blood of sacrificed animals was caught", from ἀμνός amnos, "lamb") are a clade of tetrapod vertebrates comprising the reptiles, birds, and mammals.

New!!: Chordate and Amniote · See more »

Amphibian

Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia.

New!!: Chordate and Amphibian · See more »

Anaspida

Anaspida ("without shield") is an extinct group of primitive jawless vertebrates that lived primarily during the Silurian period, and became extinct soon after the start of the Devonian.

New!!: Chordate and Anaspida · See more »

Animal

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

New!!: Chordate and Animal · See more »

Anus

The anus (from Latin anus meaning "ring", "circle") is an opening at the opposite end of an animal's digestive tract from the mouth.

New!!: Chordate and Anus · See more »

Archosauromorpha

Archosauromorpha (Greek for "ruling lizard forms") is a clade (or infraclass) of diapsid reptiles that first appeared during the middle Permian and became more common during the Triassic.

New!!: Chordate and Archosauromorpha · See more »

Ascidiacea

Ascidiacea (commonly known as the ascidians or sea squirts) is a paraphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders.

New!!: Chordate and Ascidiacea · See more »

Aspiraculata

Sorberacea are a monofamilial class of benthic Tunicates.

New!!: Chordate and Aspiraculata · See more »

Avemetatarsalia

Avemetatarsalia (meaning "bird metatarsals") is a clade name established by British palaeontologist Michael Benton in 1999 for all crown group archosaurs that are closer to birds than to crocodiles.

New!!: Chordate and Avemetatarsalia · See more »

BBC

The British Broadcasting Corporation (BBC) is a British public service broadcaster.

New!!: Chordate and BBC · See more »

Biochemistry

Biochemistry, sometimes called biological chemistry, is the study of chemical processes within and relating to living organisms.

New!!: Chordate and Biochemistry · See more »

BioEssays

BioEssays is a monthly peer-reviewed review journal covering molecular and cellular biology.

New!!: Chordate and BioEssays · See more »

Bird

Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.

New!!: Chordate and Bird · See more »

Blue whale

The blue whale (Balaenoptera musculus) is a marine mammal belonging to the baleen whale parvorder, Mysticeti.

New!!: Chordate and Blue whale · See more »

Body plan

A body plan, Bauplan (German plural Baupläne), or ground plan is a set of morphological features common to many members of a phylum of animals.

New!!: Chordate and Body plan · See more »

Burgess Shale

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

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

Calcite

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

New!!: Chordate and Calcite · See more »

Cambrian

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

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

Cartilage

Cartilage is a resilient and smooth elastic tissue, a rubber-like padding that covers and protects the ends of long bones at the joints, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs, and many other body components.

New!!: Chordate and Cartilage · See more »

Cephalaspidomorphi

Cephalaspidomorphs are a group of jawless fishes named for Cephalaspis of the osteostracans.

New!!: Chordate and Cephalaspidomorphi · See more »

Cephalochordate

A cephalochordate (from Greek: κεφαλή, "head" and χορδή, "chord") is an animal in the chordate subphylum, Cephalochordata.

New!!: Chordate and Cephalochordate · See more »

Chondrichthyes

Chondrichthyes (from Greek χονδρ- chondr- 'cartilage', ἰχθύς ichthys 'fish') is a class that contains the cartilaginous fishes: they are jawed vertebrates with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone.

New!!: Chordate and Chondrichthyes · See more »

Chordate

A chordate is an animal belonging to the phylum Chordata; chordates possess a notochord, a hollow dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail, for at least some period of their life cycle.

New!!: Chordate and Chordate · See more »

Chordate genomics

Chordate genomics is the study of the evolution of the chordate clade based on a comparison of the genomes of several species within the clade.

New!!: Chordate and Chordate genomics · See more »

Christmas

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

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

Christmas traditions

Christmas traditions vary from country to country.

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

Cilium

A cilium (the plural is cilia) is an organelle found in eukaryotic cells.

New!!: Chordate and Cilium · See more »

Circulatory system

The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis.

New!!: Chordate and Circulatory system · 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!!: Chordate and Clade · See more »

Cladistics

Cladistics (from Greek κλάδος, cládos, i.e., "branch") is an approach to biological classification in which organisms are categorized in groups ("clades") based on the most recent common ancestor.

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

Cnidaria

Cnidaria is a phylum containing over 10,000 species of animals found exclusively in aquatic (freshwater and marine) environments: they are predominantly marine species.

New!!: Chordate and Cnidaria · See more »

Coelom

The coelom is the main body cavity in most animals and is positioned inside the body to surround and contain the digestive tract and other organs.

New!!: Chordate and Coelom · See more »

Colony (biology)

In biology, a colony is composed of two or more conspecific individuals living in close association with, or connected to, one another.

New!!: Chordate and Colony (biology) · See more »

Conodont

Conodonts (Greek kōnos, "cone", + odont, "tooth") are extinct agnathan chordates resembling eels, classified in the class Conodonta.

New!!: Chordate and Conodont · See more »

Craniate

A craniate is a member of the Craniata (sometimes called the Craniota), a proposed clade of chordate animals with a skull of hard bone or cartilage.

New!!: Chordate and Craniate · See more »

Crinoid

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

New!!: Chordate and Crinoid · See more »

Crurotarsi

Crurotarsi is a group of archosauriform reptiles that includes the archosaurs (represented today by birds and crocodilians) and the extinct, crocodile-like phytosaurs.

New!!: Chordate and Crurotarsi · See more »

Cyclostomata

Cyclostomata is a group of agnathans that comprises the living jawless fishes: the lampreys and hagfishes.

New!!: Chordate and Cyclostomata · See more »

Cylinder

A cylinder (from Greek κύλινδρος – kulindros, "roller, tumbler"), has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes.

New!!: Chordate and Cylinder · See more »

Dagger (typography)

A dagger, obelisk, or obelus is a typographical symbol usually used to indicate a footnote if an asterisk has already been used.

New!!: Chordate and Dagger (typography) · See more »

Deuterostome

Deuterostomes (taxonomic term: Deuterostomia; meaning "second mouth" in Greek) are any members of a superphylum of animals.

New!!: Chordate and Deuterostome · See more »

Dorsal nerve cord

The dorsal nerve cord is a unique feature to chordates, and it is mainly found in the Vertebrata chordate subphylum.

New!!: Chordate and Dorsal nerve cord · See more »

Echinoderm

Echinoderm is the common name given to any member of the phylum Echinodermata (from Ancient Greek, ἐχῖνος, echinos – "hedgehog" and δέρμα, derma – "skin") of marine animals.

New!!: Chordate and Echinoderm · 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!!: Chordate and Ediacaran · See more »

Embryology

Embryology (from Greek ἔμβρυον, embryon, "the unborn, embryo"; and -λογία, -logia) is the branch of biology that studies the prenatal development of gametes (sex cells), fertilization, and development of embryos and fetuses.

New!!: Chordate and Embryology · See more »

Endostyle

The endostyle is an organ which assists lower-chordates (urochordates and cephalochordates, as well as the larvae of lampreys) in filter-feeding.

New!!: Chordate and Endostyle · See more »

Ernietta

Ernietta plateauensis, the sole species of the genus Ernietta, is a bag-shaped erniettomorph genus that lived half-buried in sediment, and probably fed by osmosis.

New!!: Chordate and Ernietta · See more »

Ernst Haeckel

Ernst Heinrich Philipp August Haeckel (16 February 1834 – 9 August 1919) was a German biologist, naturalist, philosopher, physician, professor, marine biologist, and artist who discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms, and coined many terms in biology, including anthropogeny, ecology, phylum, phylogeny, and Protista. Haeckel promoted and popularised Charles Darwin's work in Germany and developed the influential but no longer widely held recapitulation theory ("ontogeny recapitulates phylogeny") claiming that an individual organism's biological development, or ontogeny, parallels and summarises its species' evolutionary development, or phylogeny.

New!!: Chordate and Ernst Haeckel · See more »

Esophagus

The esophagus (American English) or oesophagus (British English), commonly known as the food pipe or gullet (gut), is an organ in vertebrates through which food passes, aided by peristaltic contractions, from the pharynx to the stomach.

New!!: Chordate and Esophagus · See more »

Evolution

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

New!!: Chordate and Evolution · 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!!: Chordate and Filter feeder · See more »

Fish

Fish are gill-bearing aquatic craniate animals that lack limbs with digits.

New!!: Chordate and Fish · See more »

Fishes of the World

Fishes of the World by Joseph S. Nelson is a standard reference for fish systematics.

New!!: Chordate and Fishes of the World · 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!!: Chordate and Fossil · See more »

Gastrointestinal tract

The gastrointestinal tract (digestive tract, digestional tract, GI tract, GIT, gut, or alimentary canal) is an organ system within humans and other animals which takes in food, digests it to extract and absorb energy and nutrients, and expels the remaining waste as feces.

New!!: Chordate and Gastrointestinal tract · 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!!: Chordate and Gill · See more »

Gill slit

Gill slits are individual openings to gills, i.e., multiple gill arches, which lack a single outer cover.

New!!: Chordate and Gill slit · See more »

Giovanni Battista Cirri

Giovanni Battista Cirri (1 October 1724 – 11 June 1808) was an Italian cellist and composer in the 18th century.

New!!: Chordate and Giovanni Battista Cirri · See more »

Gnathostomata

Gnathostomata are the jawed vertebrates.

New!!: Chordate and Gnathostomata · See more »

Gonad

A gonad or sex gland or reproductive gland is a mixed gland that produces the gametes (sex cells) and sex hormones of an organism.

New!!: Chordate and Gonad · See more »

Graptolithina

Graptolithina is a subclass of the class Pterobranchia, the members of which are known as graptolites.

New!!: Chordate and Graptolithina · See more »

Hacksaw

A hacksaw is a fine-toothed saw, originally and mainly made for cutting metal.

New!!: Chordate and Hacksaw · See more »

Hagfish

Hagfish, the class '''Myxini''' (also known as Hyperotreti), are eel-shaped, slime-producing marine fish (occasionally called slime eels).

New!!: Chordate and Hagfish · See more »

Haikouella

Haikouella is an agnathan chordate from the Lower Cambrian Maotianshan shales of Chengjiang County in Yunnan Province, China.

New!!: Chordate and Haikouella · See more »

Haikouichthys

Haikouichthys is an extinct genus of craniate (animals with notochords and distinct heads) believed to have lived 525 million years ago, during the Cambrian explosion of multicellular life.

New!!: Chordate and Haikouichthys · See more »

Hemichordate

Hemichordata is a phylum of marine deuterostome animals, generally considered the sister group of the echinoderms.

New!!: Chordate and Hemichordate · See more »

Hepatic caecum

Hepatic caecum or hepatic cecum is a name used in describing various physiological structures in some crustaceans, insects and cephalochordates.

New!!: Chordate and Hepatic caecum · See more »

Holocene

The Holocene is the current geological epoch.

New!!: Chordate and Holocene · See more »

Human

Humans (taxonomically Homo sapiens) are the only extant members of the subtribe Hominina.

New!!: Chordate and Human · See more »

Human mouth

In human anatomy, the mouth is the first portion of the alimentary canal that receives food and produces saliva.

New!!: Chordate and Human mouth · See more »

Hyperoartia

Hyperoartia or Petromyzontida is a disputed group of vertebrates that includes the modern lampreys and their fossil relatives.

New!!: Chordate and Hyperoartia · See more »

Incertae sedis

Incertae sedis (Latin for "of uncertain placement") is a term used for a taxonomic group where its broader relationships are unknown or undefined.

New!!: Chordate and Incertae sedis · See more »

International Code of Zoological Nomenclature

The International Code of Zoological Nomenclature (ICZN) is a widely accepted convention in zoology that rules the formal scientific naming of organisms treated as animals.

New!!: Chordate and International Code of Zoological Nomenclature · See more »

Iodine

Iodine is a chemical element with symbol I and atomic number 53.

New!!: Chordate and Iodine · See more »

Jane Reece

Jane B. Reece (born 15 April 1944) is an American scientist and textbook author.

New!!: Chordate and Jane Reece · See more »

Jaw

The jaw is any opposable articulated structure at the entrance of the mouth, typically used for grasping and manipulating food.

New!!: Chordate and Jaw · See more »

Jellyfish

Jellyfish or sea jelly is the informal common name given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria.

New!!: Chordate and Jellyfish · See more »

Kimberella

Kimberella is a monospecific genus of bilaterian known only from rocks of the Ediacaran period.

New!!: Chordate and Kimberella · See more »

Kryptopterus vitreolus

Kryptopterus vitreolus, known in the aquarium trade traditionally as the glass catfishSeriouslyFish: Retrieved 18 July 2014.

New!!: Chordate and Kryptopterus vitreolus · See more »

Lamprey

Lampreys (sometimes also called, inaccurately, lamprey eels) are an ancient lineage of jawless fish of the order Petromyzontiformes, placed in the superclass Cyclostomata.

New!!: Chordate and Lamprey · See more »

Lancelet

The lancelets — also known as amphioxi (singular, amphioxus) consist of about 32 species of fish-like marine chordates in the order Amphioxiformes.

New!!: Chordate and Lancelet · See more »

Larva

A larva (plural: larvae) is a distinct juvenile form many animals undergo before metamorphosis into adults.

New!!: Chordate and Larva · See more »

Larvacea

Larvaceans (Class Appendicularia) are solitary, free-swimming tunicates found throughout the world's oceans.

New!!: Chordate and Larvacea · See more »

Lepidosauromorpha

Lepidosauromorpha is a group of reptiles comprising all diapsids closer to lizards than to archosaurs (which include crocodiles and birds).

New!!: Chordate and Lepidosauromorpha · See more »

Linnaean taxonomy

Linnaean taxonomy can mean either of two related concepts.

New!!: Chordate and Linnaean taxonomy · See more »

List of chordate orders

This page contains a list of all of the classes and orders that are located in the Phylum Chordata.

New!!: Chordate and List of chordate orders · See more »

Liver

The liver, an organ only found in vertebrates, detoxifies various metabolites, synthesizes proteins, and produces biochemicals necessary for digestion.

New!!: Chordate and Liver · See more »

Lizard

Lizards are a widespread group of squamate reptiles, with over 6,000 species, ranging across all continents except Antarctica, as well as most oceanic island chains.

New!!: Chordate and Lizard · See more »

Lungfish

Lungfish are freshwater rhipidistian fish belonging to the subclass Dipnoi.

New!!: Chordate and Lungfish · See more »

Mammal

Mammals are the vertebrates within the class Mammalia (from Latin mamma "breast"), a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands.

New!!: Chordate and Mammal · 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!!: Chordate and Maotianshan Shales · See more »

Metamerism (biology)

In biology, metamerism is the phenomenon of having a linear series of body segments fundamentally similar in structure, though not all such structures are entirely alike in any single life form because some of them perform special functions.

New!!: Chordate and Metamerism (biology) · See more »

Michael Benton

Michael James "Mike" Benton FRS (born 8 April 1956) is a British palaeontologist, and professor of vertebrate palaeontology in the School of Earth Sciences at the University of Bristol.

New!!: Chordate and Michael Benton · See more »

Molecular clock

The molecular clock is a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged.

New!!: Chordate and Molecular clock · See more »

Molecular phylogenetics

Molecular phylogenetics is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominately in DNA sequences, to gain information on an organism's evolutionary relationships.

New!!: Chordate and Molecular phylogenetics · See more »

Monophyly

In cladistics, a monophyletic group, or clade, is a group of organisms that consists of all the descendants of a common ancestor.

New!!: Chordate and Monophyly · See more »

Mosasaur

Mosasaurs (from Latin Mosa meaning the 'Meuse river', and Greek σαύρος sauros meaning 'lizard') are an extinct group of large marine reptiles containing 38 genera in total.

New!!: Chordate and Mosasaur · See more »

Mucus

Mucus is a slippery aqueous secretion produced by, and covering, mucous membranes.

New!!: Chordate and Mucus · See more »

Myllokunmingia

Myllokunmingia is a genus of basal chordate from the Lower Cambrian Maotianshan shales of China, thought to be a vertebrate, although this is not conclusively proven.

New!!: Chordate and Myllokunmingia · See more »

Myllokunmingiidae

Myllokunmingiidae is a group of very early, jawless prehistoric fish (Agnathans) which lived during the Cambrian period.

New!!: Chordate and Myllokunmingiidae · See more »

Neil Campbell (scientist)

Neil Allison Campbell (April 17, 1946 – October 21, 2004) was an American scientist known best for his textbook Biology.

New!!: Chordate and Neil Campbell (scientist) · See more »

Nerve

A nerve is an enclosed, cable-like bundle of axons (nerve fibers, the long and slender projections of neurons) in the peripheral nervous system.

New!!: Chordate and Nerve · See more »

Nervous system

The nervous system is the part of an animal that coordinates its actions by transmitting signals to and from different parts of its body.

New!!: Chordate and Nervous system · See more »

Neural tube

In the developing chordate (including vertebrates), the neural tube is the embryonic precursor to the central nervous system, which is made up of the brain and spinal cord.

New!!: Chordate and Neural tube · See more »

Neurocranium

In human anatomy, the neurocranium, also known as the braincase, brainpan, or brain-pan is the upper and back part of the skull, which forms a protective case around the brain.

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

Notochord

In anatomy, the notochord is a flexible rod made out of a material similar to cartilage.

New!!: Chordate and Notochord · See more »

Osteichthyes

Osteichthyes, popularly referred to as the bony fish, is a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue, as opposed to cartilage.

New!!: Chordate and Osteichthyes · See more »

Osteostraci

The class Osteostraci ("Bony Shields") is an extinct taxon of bony-armored jawless fish, termed "ostracoderms", that lived in what is now North America, Europe and Russia from the Middle Silurian to Late Devonian.

New!!: Chordate and Osteostraci · See more »

Ovary

The ovary is an organ found in the female reproductive system that produces an ovum.

New!!: Chordate and Ovary · See more »

Palaeospondylus

Palaeospondylus gunni ("Gunn's Ancient Vertebrae") is a mysterious, fish-like fossil vertebrate.

New!!: Chordate and Palaeospondylus · See more »

Paraphyly

In taxonomy, a group is paraphyletic if it consists of the group's last common ancestor and all descendants of that ancestor excluding a few—typically only one or two—monophyletic subgroups.

New!!: Chordate and Paraphyly · See more »

Peregrine falcon

The peregrine falcon (Falco peregrinus), also known as the peregrine, and historically as the duck hawk in North America, is a widespread bird of prey (raptor) in the family Falconidae.

New!!: Chordate and Peregrine falcon · See more »

Peritoneum

The peritoneum is the serous membrane that forms the lining of the abdominal cavity or coelom in amniotes and some invertebrates, such as annelids.

New!!: Chordate and Peritoneum · See more »

Pharyngeal slit

Pharyngeal slits are filter-feeding organs found in Invertebrate chordates (lancelets and tunicates) and hemichordates living in aquatic environments.

New!!: Chordate and Pharyngeal slit · See more »

Pharynx

The pharynx (plural: pharynges) is the part of the throat that is behind the mouth and nasal cavity and above the esophagus and the larynx, or the tubes going down to the stomach and the lungs.

New!!: Chordate and Pharynx · See more »

Philippe Janvier

Philippe Janvier is a French paleontologist, specialising in Palaeozoic vertebrates, who currently works at the Museum National de l’Histoire Naturelle in Paris.

New!!: Chordate and Philippe Janvier · 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!!: Chordate and Phylogenetic tree · See more »

Phylum

In biology, a phylum (plural: phyla) is a level of classification or taxonomic rank below Kingdom and above Class.

New!!: Chordate and Phylum · See more »

Pikaia

Pikaia gracilens is an extinct cephalochordate animal known from the Middle Cambrian Burgess Shale of British Columbia.

New!!: Chordate and Pikaia · See more »

Placodermi

Placodermi (from the Greek πλάξ.

New!!: Chordate and Placodermi · 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!!: Chordate and Plankton · See more »

Proboscis

A proboscis is an elongated appendage from the head of an animal, either a vertebrate or an invertebrate.

New!!: Chordate and Proboscis · See more »

Protostome

Protostomia (from Greek πρωτο- proto- "first" and στόμα stoma "mouth") is a clade of animals.

New!!: Chordate and Protostome · See more »

Pteraspidomorphi

Pteraspidomorphi is an extinct class of early jawless fish.

New!!: Chordate and Pteraspidomorphi · See more »

Pterobranchia

Pterobranchia is a clade of small worm-shaped animals.

New!!: Chordate and Pterobranchia · See more »

Reptile

Reptiles are tetrapod animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives.

New!!: Chordate and Reptile · See more »

Rhabdotubus

The Lower-Middle Cambrian animal Rhabdotubus is the earliest known pterobranch.

New!!: Chordate and Rhabdotubus · See more »

Ribosome

The ribosome is a complex molecular machine, found within all living cells, that serves as the site of biological protein synthesis (translation).

New!!: Chordate and Ribosome · See more »

RNA

Ribonucleic acid (RNA) is a polymeric molecule essential in various biological roles in coding, decoding, regulation, and expression of genes.

New!!: Chordate and RNA · See more »

Salp

A salp (plural salps), salpa (plural salpae or salpas), is a barrel-shaped, planktonic tunicate.

New!!: Chordate and Salp · See more »

Sarcopterygii

The Sarcopterygii or lobe-finned fish (from Greek σαρξ sarx, flesh, and πτερυξ pteryx, fin) – sometimes considered synonymous with Crossopterygii ("fringe-finned fish", from Greek κροσσός krossos, fringe) – constitute a clade (traditionally a class or subclass) of the bony fish, though a strict cladistic view includes the terrestrial vertebrates.

New!!: Chordate and Sarcopterygii · See more »

Sauropsida

Sauropsida ("lizard faces") is a group of amniotes that includes all existing birds and other reptiles as well as their fossil ancestors and other extinct relatives.

New!!: Chordate and Sauropsida · See more »

Sea cucumber

Sea cucumbers are echinoderms from the class Holothuroidea.

New!!: Chordate and Sea cucumber · See more »

Sea urchin

Sea urchins or urchins are typically spiny, globular animals, echinoderms in the class Echinoidea.

New!!: Chordate and Sea urchin · See more »

Sediment

Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice, and/or by the force of gravity acting on the particles.

New!!: Chordate and Sediment · See more »

Siphon

The word siphon (from σίφων "pipe, tube", also spelled syphon) is used to refer to a wide variety of devices that involve the flow of liquids through tubes.

New!!: Chordate and Siphon · See more »

Sister group

A sister group or sister taxon is a phylogenetic term denoting the closest relatives of another given unit in an evolutionary tree.

New!!: Chordate and Sister group · See more »

Skeleton

The skeleton is the body part that forms the supporting structure of an organism.

New!!: Chordate and Skeleton · See more »

Skull

The skull is a bony structure that forms the head in vertebrates.

New!!: Chordate and Skull · See more »

Snake

Snakes are elongated, legless, carnivorous reptiles of the suborder Serpentes.

New!!: Chordate and Snake · See more »

Spinal cord

The spinal cord is a long, thin, tubular bundle of nervous tissue and support cells that extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.

New!!: Chordate and Spinal cord · See more »

Starfish

Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea.

New!!: Chordate and Starfish · See more »

Symmetry in biology

Symmetry in biology is the balanced distribution of duplicate body parts or shapes within the body of an organism.

New!!: Chordate and Symmetry in biology · See more »

Synapsid

Synapsids (Greek, 'fused arch'), synonymous with theropsids (Greek, 'beast-face'), are a group of animals that includes mammals and every animal more closely related to mammals than to other living amniotes.

New!!: Chordate and Synapsid · See more »

Tadpole

A tadpole (also called a pollywog) is the larval stage in the life cycle of an amphibian, particularly that of a frog or toad.

New!!: Chordate and Tadpole · See more »

Tail

The tail is the section at the rear end of an animal's body; in general, the term refers to a distinct, flexible appendage to the torso.

New!!: Chordate and Tail · See more »

Taxonomy of invertebrates (Brusca & Brusca, 2003)

The taxonomy of invertebrates as proposed by Richard C. Brusca and Gary J. Brusca in 2003 is a system of classification with emphasis on the invertebrates, in other words, a way to classify animals, primarily those which have no backbone.

New!!: Chordate and Taxonomy of invertebrates (Brusca & Brusca, 2003) · See more »

Terreneuvian

The Terreneuvian is the lowermost and oldest series of the Cambrian geological system.

New!!: Chordate and Terreneuvian · See more »

Testicle

The testicle or testis is the male reproductive gland in all animals, including humans.

New!!: Chordate and Testicle · See more »

Tetrapod

The superclass Tetrapoda (from Greek: τετρα- "four" and πούς "foot") contains the four-limbed vertebrates known as tetrapods; it includes living and extinct amphibians, reptiles (including dinosaurs, and its subgroup birds) and mammals (including primates, and all hominid subgroups including humans), as well as earlier extinct groups.

New!!: Chordate and Tetrapod · See more »

Thaliacea

The Thaliacea comprise a class of marine animals within the subphylum Tunicata.

New!!: Chordate and Thaliacea · See more »

Thelodonti

Thelodonti (from Greek: "feeble teeth")Maisey, John G., Craig Chesek, and David Miller.

New!!: Chordate and Thelodonti · See more »

Throat

In vertebrate anatomy, the throat is the front part of the neck, positioned in front of the vertebra.

New!!: Chordate and Throat · See more »

Thyroid

The thyroid gland, or simply the thyroid, is an endocrine gland in the neck, consisting of two lobes connected by an isthmus.

New!!: Chordate and Thyroid · See more »

Tuatara

Tuatara are reptiles endemic to New Zealand.

New!!: Chordate and Tuatara · See more »

Tube feet

Tube feet are small active tubular projections on the oral face of an echinoderm, whether the arms of a starfish, or the undersides of sea urchins, sand dollars and sea cucumbers.

New!!: Chordate and Tube feet · See more »

Tunica (biology)

In biology, a tunica (plural tunicae) is a layer, coat, sheath, or similar covering.

New!!: Chordate and Tunica (biology) · See more »

Tunicate

A tunicate is a marine invertebrate animal, a member of the subphylum Tunicata, which is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords.

New!!: Chordate and Tunicate · See more »

Vertebra

In the vertebrate spinal column, each vertebra is an irregular bone with a complex structure composed of bone and some hyaline cartilage, the proportions of which vary according to the segment of the backbone and the species of vertebrate.

New!!: Chordate and Vertebra · See more »

Vertebral column

The vertebral column, also known as the backbone or spine, is part of the axial skeleton.

New!!: Chordate and Vertebral column · See more »

Vertebrate

Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).

New!!: Chordate and Vertebrate · See more »

Vertebrate Palaeontology (Benton)

Vertebrate Palaeontology is a basic textbook on vertebrate paleontology by Michael J. Benton, published by Blackwell's.

New!!: Chordate and Vertebrate Palaeontology (Benton) · See more »

Vetulicolia

VetulicoliaThe taxon name, Vetulocolia, is derived from the type genus, Vetulicola, which is a compound Latin word composed of vetuli "old" and cola "inhabitant".

New!!: Chordate and Vetulicolia · See more »

Water vascular system

The water vascular system is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration.

New!!: Chordate and Water vascular system · See more »

William Bateson

William Bateson (8 August 1861 – 8 February 1926) was an English biologist who was the first person to use the term genetics to describe the study of heredity, and the chief populariser of the ideas of Gregor Mendel following their rediscovery in 1900 by Hugo de Vries and Carl Correns.

New!!: Chordate and William Bateson · See more »

Yunnanozoon

Yunnanozoon lividum (Yunnan + Greek ζῷον zôion, lividum; "livid animal of Yunnan") is an extinct species from the Lower Cambrian, Chengjiang biota of Yunnan province, China.

New!!: Chordate and Yunnanozoon · See more »

Zhongjianichthys

Zhongjianichthys rostratus is an extinct basal chordate that lived in the Cambrian period, approximately 530 million years ago.

New!!: Chordate and Zhongjianichthys · See more »

Zhongxiniscus

Zhongxiniscus is a genus of primitive chordate from eastern Yunnan that lived during the Early Cambrian.

New!!: Chordate and Zhongxiniscus · See more »

2018

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

New!!: Chordate 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!!: Chordate and 2019 · See more »

Redirects here:

ChordaTa, Chordata, Chordata, nonvertebrate, Chordate phylum, Chordates, Chordonia, Chrodate, Euchordata, Evolutionary tree/Chordata, Olfactores, Phylum chordata, Protochordate.

References

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

OutgoingIncoming
Hey! We are on Facebook now! »