- Chordata
Arizona's Tree of Life Web Page. An introduction, pictures, characteristics, phylogenetic relationships and references on chordates.
http://phylogeny.arizona.edu/tree/eukaryotes/animals/chordata/chordata.html
(Added: Mon Jul 02 2001)
- Introduction to the Chordata
Morphological characteristics of the chordates and also links to additional information.
http://www.ucmp.berkeley.edu/chordata/chordata.html
(Added: Mon Jul 02 2001)
- Phylum Chordata
Animal Diversity Web, University of Michigan. General characteristics of chordates, with links to urochordates and vertebrates.
http://animaldiversity.ummz.umich.edu/chordata.html
(Added: Wed Jun 12 2002)
- Phylum Chordata
This site, from the University of Minnesota has information on chordates, and links to some primitive chordates, as well as the vertebrate classes.
http://www.cbs.umn.edu/class/spring2000/biol/2012/chordate.htm
(Added: Mon Jul 02 2001)
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