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105 relations: Acorn worm, Actinopterygii, Agnatha, Ambulacraria, Amphibian, Ancient Greek, Animal, Anus, Asterozoa, Batoidea, Bilateria, Bird, Blastula, Body cavity, Bone, Brachiopod, Brittle star, Bryozoa, Burgess Shale, Cambrian, Cambroernid, Cephalochordate, Cephalodiscus, Chaetognatha, Chimaera, Chondrichthyes, Chordate, Cleavage (embryo), Cloaca, Cnidaria, Coelom, Craniate, Crinoid, Crinozoa, Cyclostomata, Deuterostome, Ecdysozoa, Echinoderm, Echinozoa, Ediacaran, Embryogenesis, Encyclopædia Britannica, Endodermic evagination, Enterocoely, Eumetazoa, Extinction, Fish, Gastrulation, Gill slit, Gnathostomata, ..., Graptolithina, Hagfish, Haikouella, Haikouichthys, Harrimaniidae, Hemichordate, Holocene, Incertae sedis, Jellyfish, Karl Grobben, Kimberella, Lamprey, Lancelet, Lophophore, Lophotrochozoa, Mammal, Maotianshan Shales, Marinoan glaciation, Mitrate, Mouth, Myllokunmingia, Neoproterozoic, Nephrozoa, Ordovician, Osteichthyes, Permian, Pharynx, Phoronid, Phylogenetic tree, Phylum, Pikaia, Protostome, Pterobranchia, Ptychoderidae, Reptile, Rhabdopleurida, Rhabdotubus, Saccorhytus, Sarcopterygii, Sea cucumber, Sea urchin, Shark, Skate (fish), Spiralia, Starfish, Taxon, Tetrapod, The New York Times, Timeline of the evolutionary history of life, Torquaratoridae, Tunicate, Vertebrate, Vetulicolia, Yunnanozoon, Zygote. Expand index (55 more) »
Acorn worm
The acorn worms or Enteropneusta are a hemichordate class of invertebrates consisting of one order of the same name.
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Actinopterygii
Actinopterygii, or the ray-finned fishes, constitute a class or subclass of the bony fishes.
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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.
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Ambulacraria
Ambulacraria or Coelomopora is a clade of invertebrate phyla which includes echinoderms and hemichordates; a member of this group is called an ambulacrarian.
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Amphibian
Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia.
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Ancient Greek
The Ancient Greek language includes the forms of Greek used in ancient Greece and the ancient world from around the 9th century BC to the 6th century AD.
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Animal
Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia.
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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.
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Asterozoa
The Asterozoa are a superclass in the phylum Echinodermata.
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Batoidea
Batoidea is a superorder of cartilaginous fish commonly known as rays.
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Bilateria
The Bilateria or bilaterians, or triploblasts, are animals with bilateral symmetry, i.e., they have a head (anterior) and a tail (posterior) as well as a back (dorsal) and a belly (ventral); therefore they also have a left side and a right side.
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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.
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Blastula
The blastula (from Greek βλαστός (blastos), meaning "sprout") is a hollow sphere of cells, referred to as blastomeres, surrounding an inner fluid-filled cavity called the blastocoele formed during an early stage of embryonic development in animals.
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Body cavity
A body cavity is any fluid-filled space in a multicellular organism other than those of vessels (such as blood vessels and lymph vessels).
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Bone
A bone is a rigid organ that constitutes part of the vertebrate skeleton.
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Brachiopod
Brachiopods, phylum Brachiopoda, are a group of lophotrochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs.
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Brittle star
Brittle stars or ophiuroids are echinoderms in the class Ophiuroidea closely related to starfish.
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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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Cambrian
The Cambrian Period was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon.
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Cambroernid
The cambroernids are a clade containing the eldoniids and Herpetogaster-like forms.
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Cephalochordate
A cephalochordate (from Greek: κεφαλή, "head" and χορδή, "chord") is an animal in the chordate subphylum, Cephalochordata.
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Cephalodiscus
Cephalodiscus is a genus of hemichordates in the order Cephalodiscida.
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Chaetognatha
Chaetognatha, meaning bristle-jaws, and commonly known as arrow worms, is a phylum of predatory marine worms which are a major component of plankton worldwide.
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Chimaera
Chimaeras the order Chimaeriformes, known informally as ghost sharks, rat fish (not to be confused with the rattails), spookfish (not to be confused with the true spookfish of the family Opisthoproctidae), or rabbit fish (not to be confused with the family Siganidae).
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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.
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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.
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Cleavage (embryo)
In embryology, cleavage is the division of cells in the early embryo.
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Cloaca
In animal anatomy, a cloaca (plural cloacae or) is the posterior orifice that serves as the only opening for the digestive, reproductive, and urinary tracts (if present) of many vertebrate animals, opening at the vent.
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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.
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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.
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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.
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Crinoid
Crinoids are marine animals that make up the class Crinoidea of the echinoderms (phylum Echinodermata).
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Crinozoa
Crinozoa is a subphylum of mostly sessile echinoderms, of which the crinoids, or sea lilies, are the only extant members.
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Cyclostomata
Cyclostomata is a group of agnathans that comprises the living jawless fishes: the lampreys and hagfishes.
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Deuterostome
Deuterostomes (taxonomic term: Deuterostomia; meaning "second mouth" in Greek) are any members of a superphylum of animals.
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Ecdysozoa
Ecdysozoa is a group of protostome animals, including Arthropoda (insects, chelicerata, crustaceans, and myriapods), Nematoda, and several smaller phyla.
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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.
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Echinozoa
Echinozoa is a subphylum of free-living echinoderms in which the body is essentially globoid with meridional symmetry.
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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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Embryogenesis
Embryogenesis is the process by which the embryo forms and develops.
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Encyclopædia Britannica
The Encyclopædia Britannica (Latin for "British Encyclopaedia"), published by Encyclopædia Britannica, Inc., is a general knowledge English-language encyclopaedia.
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Endodermic evagination
Endodermic evagination relates to the inner germ layers of cells of the very early embryo, from which is formed the lining of the digestive tract, of other internal organs, and of certain glands, implies the extension of a layer of body tissue to form a pouch, or the turning inside out (protrusion) of some body part or organ from its basic position, for example the para-nasal sinuses are believed to be formed in the fetus by 'ballooning' of the developing nasal canal, and the prostate or Skene's gland formed out of evaginations of the urethra.
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Enterocoely
Enterocoely (adjective forms: enterocoelic and enterocoelous) is a process by which some animal embryos develop.
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Eumetazoa
Eumetazoa (Greek: εὖ, well + μετά, after + ζῷον, animal) or '''Diploblasts''', or Epitheliozoa, or Histozoa are a proposed basal animal clade as sister group of the Porifera.
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Extinction
In biology, extinction is the termination of an organism or of a group of organisms (taxon), normally a species.
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Fish
Fish are gill-bearing aquatic craniate animals that lack limbs with digits.
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Gastrulation
Gastrulation is a phase early in the embryonic development of most animals, during which the single-layered blastula is reorganized into a multilayered structure known as the gastrula.
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Gill slit
Gill slits are individual openings to gills, i.e., multiple gill arches, which lack a single outer cover.
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Gnathostomata
Gnathostomata are the jawed vertebrates.
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Graptolithina
Graptolithina is a subclass of the class Pterobranchia, the members of which are known as graptolites.
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Hagfish
Hagfish, the class '''Myxini''' (also known as Hyperotreti), are eel-shaped, slime-producing marine fish (occasionally called slime eels).
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Haikouella
Haikouella is an agnathan chordate from the Lower Cambrian Maotianshan shales of Chengjiang County in Yunnan Province, China.
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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.
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Harrimaniidae
Harrimaniidae is a family of acorn worms.
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Hemichordate
Hemichordata is a phylum of marine deuterostome animals, generally considered the sister group of the echinoderms.
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Holocene
The Holocene is the current geological epoch.
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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.
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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.
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Karl Grobben
Karl Grobben (August 27, 1854, Brno – April 13, 1945, Salzburg) was an Austrian biologist.
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Kimberella
Kimberella is a monospecific genus of bilaterian known only from rocks of the Ediacaran period.
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Lamprey
Lampreys (sometimes also called, inaccurately, lamprey eels) are an ancient lineage of jawless fish of the order Petromyzontiformes, placed in the superclass Cyclostomata.
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Lancelet
The lancelets — also known as amphioxi (singular, amphioxus) consist of about 32 species of fish-like marine chordates in the order Amphioxiformes.
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Lophophore
The lophophore is a characteristic feeding organ possessed by four major groups of animals: the Brachiopoda, Bryozoa, Hyolitha, and Phoronida, which collectively constitute the protostome group Lophophorata.
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Lophotrochozoa
Lophotrochozoa ("crest/wheel animals") is a clade of protostome animals within the Spiralia.
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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.
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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.
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Marinoan glaciation
The Marinoan glaciation was a period of worldwide glaciation that lasted from approximately 650 to 635 Ma (million years ago) during the Cryogenian period.
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Mitrate
Mitrates are an extinct group of stem group echinoderms, which may be closely related to the hemichordates.
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Mouth
In animal anatomy, the mouth, also known as the oral cavity, buccal cavity, or in Latin cavum oris, is the opening through which many animals take in food and issue vocal sounds.
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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.
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Neoproterozoic
The Neoproterozoic Era is the unit of geologic time from.
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Nephrozoa
Nephrozoa is a major clade of bilaterians, divided into the protostomes and the deuterostomes, containing almost all animal phyla and over a million extant species.
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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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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.
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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.
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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.
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Phoronid
Phoronids (scientific name Phoronida, sometimes called horseshoe worms) are a small phylum of marine animals that filter-feed with a lophophore (a "crown" of tentacles), and build upright tubes of chitin to support and protect their soft bodies.
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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.
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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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Protostome
Protostomia (from Greek πρωτο- proto- "first" and στόμα stoma "mouth") is a clade of animals.
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Pterobranchia
Pterobranchia is a clade of small worm-shaped animals.
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Ptychoderidae
Ptychoderidae is a family of acorn worms.
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Reptile
Reptiles are tetrapod animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives.
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Rhabdopleurida
Rhabdopleurida is one of three orders in the class Pterobranchia, which are small, worm-shaped animals.
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Rhabdotubus
The Lower-Middle Cambrian animal Rhabdotubus is the earliest known pterobranch.
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Saccorhytus
Saccorhytus (from Latin saccus "bag" and Ancient Greek ῥύτις rhytis "wrinkle") is an extinct genus of animal belonging to the superphylum Deuterostomia, which is represented by a single species, Saccorhytus coronarius (from Latin attributive coronarius " crown").
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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.
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Sea cucumber
Sea cucumbers are echinoderms from the class Holothuroidea.
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Sea urchin
Sea urchins or urchins are typically spiny, globular animals, echinoderms in the class Echinoidea.
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Shark
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head.
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Skate (fish)
Skates are cartilaginous fish belonging to the family Rajidae in the superorder Batoidea of rays.
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Spiralia
The Spiralia are a morphologically diverse clade of protostome animals, including within their number the molluscs, annelids, platyhelminths and other taxa.
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Starfish
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea.
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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.
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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.
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The New York Times
The New York Times (sometimes abbreviated as The NYT or The Times) is an American newspaper based in New York City with worldwide influence and readership.
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Timeline of the evolutionary history of life
This timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth.
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Torquaratoridae
Torquaratoridae (Latin for “neck plow”) is a family of Hemichordata that lives in deep waters.
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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.
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Vertebrate
Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).
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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".
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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.
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Zygote
A zygote (from Greek ζυγωτός zygōtos "joined" or "yoked", from ζυγοῦν zygoun "to join" or "to yoke") is a eukaryotic cell formed by a fertilization event between two gametes.
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Redirects here:
Deuterostoma, Deuterostomata, Deuterostomes, Deuterostomia.
References
[1] https://en.wikipedia.org/wiki/Deuterostome
