There is some evidence that extinct reptiles called cynodonts,which arose about 260 million years ago,may have had whisker-like hairs around their mouths.If this is 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.

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The Answer of There is some evidence that extinct reptiles called cynodonts,which arose about 260 million years ago,may have had whisker-like hairs around their mouths.If this is 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.

There Is Some Evidence That Extinct Reptiles Called Cynodonts,which Arose