A. The braincase is sharply angled on the sides (this is best seen looking down on the cranium).
B. There are two small holes on the top of the cranium.
C. The interparietal bone (a single triangular bone in the center of the midline at the back of the cranium) is prominent. | A. The braincase is not sharply angled on the sides (this is best seen looking down on the skull).
B. There are no small holes on the top of the cranium.
C. The interparietal bone (a single triangular bone in the center of the midline at the back of the cranium) is not present. |