Some skulls also bear evidence of trepanning, a kind of early brain surgery to relieve internal pressure or remove damaged skull matter suffered in battle.

A piece of bone is missing at the rear, and the skull also bears a hole 1 inch wide, probably made by another Tyrannosaurus.

The skull was long and flat, smooth and bearing small horns.

The skulls of newborn black bear cubs bear great resemblance to those of adult sun bears.

The skull bears many small teeth, including a pair of canines in the upper and lower jaws.

The animal was nearly twenty feet in length, and the skull bears a bony horn core on the united nasal bones.

The skull bears a well-developed pair of brow horns, similar to those of chasmosaurs and primitive centrosaurs, but the nose horn is absent.

The skull bears little similarity to that of the European badger, and greatly resembles a larger version of a marbled polecat skull.

In side view the skull of Psittacosaurus bears very little resemblance to that of Styracosaurus but in top view a similar pentagonal arrangement can be seen.

Although classed as an early Neanderthal type, the skull bears some features found in the species homo sapiens.