Additional
Information: The Phylum Chordata, the chordates, is the classication of organisms that possess a structure called a notochord, at least during some part of their development.
The best known chordates are the vertebrates (fishes, amphibians, reptiles, birds, mamm
Phylum Chordata 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. (Chordata) http://animaldiversity.ummz.umich.edu/chordata.html
Vertebrata Vertebrata: Introduction to the vertebrates and their classification, including the Hyperoartia, or lampreys, and the Gnathostomata, or jawed vertebrates. (Chordata) http://tolweb.org/tree?group=Vertebrata&contgroup=Craniata
Chordata Chordata: Overview of the taxonomy of Phylum Chordata, which includes the well-known vertebrates (fishes, amphibians, reptiles, birds, mammals), hagfishes, tunicates, and lancelets. (Chordata) http://tolweb.org/tree?group=Chordata&contgroup=Animals
Gnathostomata Gnathostomata: Philippe Janvier's article about the jawed vertebrates in the Tree of Life website. (Chordata) http://ag.arizona.edu/ENTO/tree/eukaryotes/animals/chordata/gnathostomata.html
Subphylum Vertebrata 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. (Chordata) http://animaldiversity.ummz.umich.edu/vertebrata.html
Additional
Information: The Phylum Chordata, the chordates, is the classication of organisms that possess a structure called a notochord, at least during some part of their development.
The best known chordates are the vertebrates (fishes, amphibians, reptiles, birds, mamm
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