| Directory > Science > Biology > Flora and Fauna > Animalia > Chordata Chordata
Overview of the taxonomy of Phylum Chordata, which includes the well-known vertebrates (fishes,
amphibians, reptiles, birds, mammals), hagfishes, tunicates, and lancelets.
http://tolweb.org/tree?group=Chordata&contgroup=Animals
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Vertebrata
Introduction to the vertebrates and their classification, including the Hyperoartia, or lampreys,
and the Gnathostomata, or jawed vertebrates.
http://tolweb.org/tree?group=Vertebrata&contgroup=Craniata
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Vertebrate Phylogeny
Cladograms with short articles and illustrations by Jack Conrad.
http://www.geocities.com/CapeCanaveral/Hall/1636/
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Subphylum Vertebrata
What makes a vertebrate a vertebrate? They have more in common than a backbone. Find out more in
this site from the Animal Diversity Web.
http://animaldiversity.ummz.umich.edu/vertebrata.html
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Gnathostomata
Philippe Janvier's article about the jawed vertebrates in the Tree of Life website.
http://ag.arizona.edu/ENTO/tree/eukaryotes/animals/chordata/gnathostomata.html
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Phylum Chordata
Brief introduction to the chordates, defined as organisms that possess a structure called a
notochord, at least during some part of their development. Includes links to information about
subgroups and representative animals.
http://animaldiversity.ummz.umich.edu/chordata.html
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