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...
University of California
Ucmp: Introduction to the Cephalochordates & Lancelets
This site describes the lancelets and the characteristics of chordates they express.
University of California
Ucmp: Introduction to Urochordata
This site introduces Urochordates and mentions the characteristics of Chordates that Tunicates exhibit. There are links to additional information about Chordate Characteristics
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.
CK-12 Foundation
Ck 12: Life Science: Chordates
[Free Registration/Login may be required to access all resource tools.] Did you know that fish, amphibians, reptiles, birds, and mammals are all related? They are all chordates. Chordates are a group of animals that includes vertebrates,...
CK-12 Foundation
Ck 12: Biology: Chordates
[Free Registration/Login may be required to access all resource tools.] Overview of the characteristics and classification of chordates.