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.
It was from some quite old sources which I couldn't even remember the title and author properly.
But I think Panthera shawi should be the basal species/common ancestor for all lion species we known. It was the genetic isolation that created the interspecific status of the Eurasian/American Pleistocene lions.
The modern lions look mainly descended from the southern group of Panthera shawi, but when they dispersed to the rest of Africa, they could have managed to absorb the leftover of the northern group. From some anecdotal observation, I've seen the canine teeth of East African lions bear some resemblance with the Cave lion canine teeth. Maybe some modern lion population could show some closer genetic affinity with the Cave lion group than the rest.