He said he had pain in his head.
After a time he told them he was 'going off'.
As will be seen in this chapter, the spread of behaviorally modern humans closely coincided not only with the extinction of humans and primates that existed for hundreds of thousands and even millions of years, but virtually all of the world’s large animals went extinct almost when behaviorally modern humans arrived, all except those that had evolved alongside the human line for millions of years in Africa and Eurasia. Some vanished animals were among the most successful in Earth’s history.
His face was weary and full of pain.
To briefly revisit , to that speculation above, scientists ideally want persuasive evidence that humans drove and to extinction. They want Acheulean or later technological artifacts associated with kills of those species. All that scientists have found for so far are some teeth and jawbones. Although such deductive reasoning is sound, the fossil and artifactual record is so thin that such evidence will probably never be adduced, even if it was a common event 150-100 kya. survived for nine million years and disappeared around when more lethal humans arrived, and a , soon after anatomically modern humans arrived in the vicinity. Is that a coincidence? There is genetic evidence that behaviorally modern humans interbred with , , and perhaps , and they all went extinct soon after those behaviorally modern humans arrived. That they interbred put to bed the hypotheses that they went extinct before arrived on the scene. If they went extinct after behaviorally modern humans arrived, as the genetic evidence clearly tells us, the implications are obvious, and any extinction hypothesis that invokes climate change or some other natural catastrophe has some high hurdles to overcome. Those events were probably early salvos of the .