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Author Question: What do all craniates have that earlier chordates did noWhat do all craniates ha (Read 463 times)

federox

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on: Aug 8, 2013
What do all craniates have that earlier chordates did not have?
A) brain
B) vertebrae
C) cartilaginous pipe surrounding notochord
D) partial or complete skull
E) bone


theo

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Reply #1 on: Aug 10, 2013
Answer has to be D, trust me!


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