BIOLOGY:HOW LIFE WORKS (COMP.)-W/ACCESS
3rd Edition
ISBN: 9781319358075
Author: Morris
Publisher: Macmillan Higher Education
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Chapter 42.5, Problem 12SAQ
Summary Introduction
Animals which have skeleton and backbone are called as a vertebrate. All the animal species are comprised by vertebrates within the subphylum Vertebrata. Vertebrates include jawless vertebrate and jawless fishes which include the bony fishes and cartilaginous fishes such as rays, and sharks. Other vertebrates are mammals, reptiles, birds, and amphibians.
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