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Author Question: There is some evidence that reptiles called cynodonts may have had whisker-like (Read 518 times)

geoffrey

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on: Jul 14, 2013
There is some evidence that reptiles called cynodonts may have had whisker-like hairs around their mouths. If true, then what can be properly said of hair?
A) It is a shared derived character of mammals, even if cynodonts continue to be classified as reptiles.
B) It is a shared derived character of the amniote clade, and not of the mammal clade.
C) It is a shared ancestral character of the amniote clade, but only if cynodonts are reclassified as mammals.
D) It is a shared derived character of the mammals, but only if cynodonts are reclassified as mammals.


penguins

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Reply #1 on: Jul 15, 2013
Easy! It's D. Bye for now :D


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geoffrey

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Reply #2 on: Jul 15, 2013
Thanks so much, the answer you provide was right on!


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