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.
Some male birds and mammals congregate in communal courting grounds called leks.
Persian leopard (Panthera pardus ciscaucasica), also called Caucasian leopard
Pre–steady state kinetic evidence for an acyl-enzyme intermediate
The Krapina remains may provide evidence of cannibalism by some Neadertals.
Rubella rash in a young child. Rubella is also called 3-day measles or German measles.
Visible evidence of mosaic tissues in a human female