Overview

Chordata


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A phylum of animals characterized by a hollow dorsal nerve cord and, at some stage in their development, a flexible skeletal rod (the notochord) and gill slits opening from the pharynx. There are three subphyla: the Urochordata (sea squirts), Cephalochordata (lancelets), and Craniata.

http://www.tolweb.org/Chordata Tree of Life web page outlining main characteristics and phylogeny of chordates

Subjects: Biological Sciences.


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