Neeyambaspis enigmatica (Australia; Devonian) Reconstruction of a jawless fish.

A skull of the Balearian mouse-goat, Myotragus balearicus, seen in left lateral and right semi-profile aspects. This specimen dates back to the Lower Paleolithic to Neolithic between 500,000 and only 5,000 years before the Current Era. It was discovered in the Islands of Majorca, Spain.
Photo credit: Didier Descouens