Yaargh, he was eaten by a tyranosaurus who also ended up with his lady love. Of course once Yaargh knew that the reptile was preferred over him he would have gladly placed his neanderthal head in the flint smasher. So being the rather stubby dinner for Rex didn't feel that bad. Of course the bateria, paleozoic ones, in the lizard's saliva would've happily colonised his gonads (that's where they bite) and killed him and his neighbours with the gangarene gas. But then the neighbours were all dead, thanks to a ravenous T-Rex and a faulty flint smasher.
As Yaaargh passed into afterlife he added another 'a' to his name, to grow as an individual he would say. That is if you met him and to do so you'd have to end up in the nether regions of a neanderthal world, the thing they called Rhumba. Today, however, we have a sophisticated hell system where everyone has a no-exit booking etc."Hmph!"