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Author Question: Which of the following could be considered the most recent common ancestor of li (Read 562 times)

federox

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on: Aug 8, 2013
Which of the following could be considered the most recent common ancestor of living tetrapods?
A) a sturdy-finned, shallow-water lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates
B) an armored, jawed placoderm with two pairs of appendages
C) an early ray-finned fish that developed bony skeletal supports in its paired fins
D) a salamander that had legs supported by a bony skeleton but moved with the side-to-side bending typical of fishes
E) an early terrestrial caecilian whose legless condition had evolved secondarily


theo

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Reply #1 on: Aug 10, 2013
Answer has to be A, 100% :D


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