Solution:Human skulls are characterized by the presence of a chin, an elevated nasal bridge, and no diastema.These features distinguish human skulls from those of other primates. The presence of a chin is unique to modern humans, providing structural support for the jaw. The elevated nasal bridge allows for the attachment of facial muscles and supports the nose. The lack of diastema, or a gap between the teeth, is due to the alignment of human teeth.
The simian shelf, a bony ridge in the lower jaw, is found in non-human primates and is absent in humans.