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The top documents tagged [presence of vertebrae]
209 20 13_1
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Vertebrate Origins. Vertebrates are but a single subphylum within the chordates. What defines a chordate? Notochord at some stage of development. Dorsal
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Vertebrate Origins
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3.2 Exploring Animal Diversity Big ideas to keep in mind Animals are multicellular, heterotrophic, eukaryotic organisms Each animal has a unique body plan
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