Image caption: Homo Erectus, Homo Floresiensis and Homo Sapiens skulls on display. Note the chin structures of the two most visible and complete skulls of the three.
The well-known ideas circling out there about the human chin are pretty much in general agreement about its potential adaptive nature, they are just not in unison about what that adaptive nature is. To get a glimpse of what these ideas entail, we'll take a preliminary look at a recently published journal by Zaneta M. Thayer and Seth D. Dobson, titled Sexual dimorphism in chin shape: Implications for adaptive hypotheses.