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.
(02-05-2016, 06:34 AM)Polar Wrote: I've heard of U. ingressus and U. spelaeus, but not U. kudarensis. If so, is it right that the Cave Bear (U. spelaeus) descended from U. ingressus which descended from the original ursine, U. etruscus? (I remember reading this idea on a Google Book document, but I can't find the book in their library?)
U. etruscus derived from U. minimus which known as the common ancestor of the brown bear lineage and the black bear lineage.
The European branch of U. etruscus gave the rise of U. deningeri, U. ingressus, U. Kudarensis. Later, U. deningeri gave the rise of U. spalaeus.
The Asian branch of U. etruscus gave the rise of U. arctos.