Actually, the more we learn about early hominids and homo-sapiens, the less they appear like "low-brow grunting" animals and the more they appear like us. Neanderthal and Cro-Magnon man are very similar to homo sapien, sapien (modern man). Anthropologists now recognize both of these homo sapiens hunted, foraged and lived together in bands, fabricated clothes from animal skins, used fire, constructed stone tools, buried their dead, played flutes and drew pictographs of hunting scenes on the walls of caves. Other Anthropologists say there is no reason from an anatomical standpoint, Neanderthals and Cro-Magnon man did not use a "spoken" language like we do.
So the image of primal man, existing ONLY as "Australopithecus" an (ape-like) creatures which lived hundreds of millions of years ago, is quite disingenuous and amounts to religious "pseudoscience".
As long as Christians continue to shovel this kind of nonsensical religious pseudoscience at their children, their children (who have access to the internet, the Discovery Channel, books and Discover Magazine) will continue to LEAVE the church in droves. Your children are not FOOLS. and they know when they are being LIED to.
"Science without religion is lame, religion without science is blind"
Albert Einstein