[BenLurkin]

ping

[Inyo-Mono]

but the new bone suggests another primitive human could have survived far longer, perhaps until the end of the last Ice Age.

Or much longer, Yeti, Bigfoot anyone?

[JimSEA]

Additionally, you have Homo Floresiensis. Homo Erectus was a very successful fellow who populated much of the world. Likely lots of folks somewhat like us around for a long time after our emergence.