Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 32.3, Problem 1R
Summary Introduction
To review:
The synapomorphies, which characterize the vertebrates and chordates.
Introduction:
The phylum Chordata includes three subphyla, which are vertebrata (Craniata), Cephalochordata (lancelets), and Urochordata (tunicate). On the other hand, the vertebrata includes five classes, which are fish, amphibians, reptiles, birds, and mammals. The animals under this subphylum are morphologically quite distinct. Their common ancestry is evident only during their respective embryonic stages.
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Life: The Science of Biology
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