Web Directory

» 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

» 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.
   http://www.fzi.uni-freiburg.de/VertebratesMOC/

» 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.
   http://www.wildlifenorthamerica.com/

» 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

» 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.
   http://www.mba.ac.uk/nmbl/publications/occpub/guide/section17.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.
   http://animaldiversity.ummz.umich.edu/vertebrata.html

» 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.
   http://tolweb.org/tree?group=Gnathostomata

» 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