Animalia Chordata

• Science: Biology: Zoology: Chordates  (369)
• Science: Earth Sciences: Paleontology: Vertebrates  (340)

Chordata - Overview of the taxonomy of Phylum Chordata, which includes the well-known vertebrates (fishes, amphibians, reptiles, birds, mammals), hagfishes, tunicates, and lancelets.

Database of Vertebrates and Centres of Vertebrate Diversity in Mozambique - The Database includes almost 3500 vertebrate species, taxonomic information, English, Portuguese and vernacular names, conservation status and numerous maps illustrating biodiversity hotspots and locations of endemic species.

North American Wildlife - Includes photographs and information on a wide range of mammals and reptiles from Canada, the United States and Mexico. Includes fact sheets and distribution maps.

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.

Phylum Hemichordata, Urochordata and Cephalochordata - Illustrated description of these three phyla, and the three classes within Urochordata. Also information on the larval stages, when they form part of the plankton. [PDF]

Subphylum Vertebrata - What makes a vertebrate a vertebrate? They have more in common than a backbone. Find out more from the Animal Diversity Web.

Tree of Life: Gnathostomata - Philippe Janvier's article about this clade which differs from all other vertebrates in having a vertically biting device, the jaws.

Vertebrata - Introduction to the vertebrates and their classification, including the Hyperoartia, or lampreys, and the Gnathostomata, or jawed vertebrates.