Question

attached you have 2 picture of the scull

and the third picture are the question regarding the sculls

Looking at the skull, primates are distinguishable from other mammals using a combination of features-no single feature is unique to primates, but the combination is Primates have a closed orbital rim (either a postorbital bar with a ring of bone all around the margin of the eye socket or postorbital closure with a completely enclosed eye socket). Examine the 3 skulls below. Pay particular attention to the orbit (post orbital closure, post orbital bar only, or no bar) eye orientation (sideways or forward), and relatively brain size (large or small) to determine if it is a primate or not.

Answer 1

Skull A has an orbit that shows the presence of a post-orbital bar. There's presence of a post-orbital bar only and no post-orbital closure.

The eye orientation in Skull A is forward.

The relative brain size in Skull A is large.

Skull A is of a primate.

Skull B shows the presence of a post-orbital bar only.

The eye orientation in Skull B is sideways.

The relative brain size of Skull B is small.

Yes, Skull B is of a primate.

Skull C doesn't show any post-orbital bar.

The eye-orientation in Skull C is sideways.

The relative brain size of Skull C is small.

No, Skull C is not of a primate.