There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
I think Marciszak has pointed out that the 451mm skull belongs to the transitional period, while the 475mm one belonged to the late evolutionary phase of P.fossilis.
BTW, what would be the body mass of a male Amur tiger that measures 4 feet tall at shoulder and 8 feet long with the head+body length?