Now, however, paleontologists from the University of Zurich have rediscovered it: the "os interparietale," a skull bone ... a medial and a lateral pair." The tabular bones of our reptile-like ...

This means that when we swivel our eyeballs sideways, we have a lateral view of the world that is unimpeded by the bones of the skull, unlike other apes. Last year Denion and his colleagues showed ...