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.
Sheng et al. (2014) has the far east Asian cave hyena being present within a pandemic population earlier than 400 kya, isolated as late as 230 kya, and last being present as recent as 50 kya. The Manchurian cave hyena fossils are dated anyhwere 145-50 kya. No cave hyena specimen from Manchuria has been dated any earlier. If this mandible were found in the same faunal level as the hyenas, then that's a relatively recent specimen.
The fossil smugglers really make me go "eh." That fact pretty much ends this mandibles hope for official publication.