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.
From my observation, there are several modern stem groups that have been distinguished with two separated species, like gorilla, orangutan, clouded leopard.
This was caused by the genetic isolation between the two populations of the same group/species, and the Mainland tiger/Sunda tiger is also following this trend if their population continues to be isolated from each other.
Now in case with the lion group, due the isolation between the different glacial periods, they had produced more than two separated species, more likely three distinct species we known so far; Fossilis-Atrox, Spelaea, Leo.