PBS
Pbs the Shape of Life: Phylum Chordata
From a PBS television series, this site offers a summary of the features which characterize the phylum chordata and includes multiple color photos.
Regents of the University of Michigan
Animal Diversity Web: Phylum Chordata (Chordates)
This site contains a listing of additional characteristics that many Chordates have in common beyond the typical four: notochord, dorsal nerve cord, pharyngeal slits, and a post-anal tail.
University of California
Ucmp: Introduction to Chordata
This site from UC Berkeley is an excellent site about the animal phylum chordata. Click on various sections to learn more, covering topics such as the fossil record, life history & ecology, systematics, and morphology. This site is a...
Untamed Science
Untamed Science: Biodiversity: Animals: Chordates: Amphibians: Class Amphibia
Explore the biodiversity of the Class Amphibia through videos, photos and examples. [2:34]
Untamed Science
Untamed Science: Biodiversity: Animals: Chordates: Birds: Class Birds
Through video clips and pictures, explore the orders and a variety of species found in the Class Aves.
Other
University of Aberdeen: The Phyla of Kingdom Animalia
Very systematic breakdown of the animal kingdom starting with the simplest type the sponge, all the way to the chordate or vertebrate. Each phylum has a link with information.
Other
University of Wisconsin La Crosse: Zoo Lab: A Resource for Animal Biology
A fantastic source of basic zoological information, a great supplement for all animal biology classrooms.
Biology 4 kids
Biology4 Kids: Quiz: Vertebrates
Take this ten-question review quiz over the Phylum Chordata. Read more about each question after an incorrect answer is given.