"The Irish Deer or Giant Deer was a species of Megaloceros and one of the largest deer that ever lived. Its range extended across Eurasia, from Ireland to east of Lake Baikal, during the Late Pleistocene.
Skull of Barbourofelis, extinct carnivorous mammals which lived during the Miocene to 6 mio years ago) in North America. For a parallel evolution phenomenon, the appearance of this predator reminded very much the saber-toothed tigers.
A Million Year old skull was found. Here seen is the skull and drawings of what the muscles and look the head of the species would probably have had. It is a new species but is most similar to modern tigers.