Animal that lived 4000 million years ago?

smilodon, while not existing as late as 10000bce, are depicted in the movie. furthermore, they only existed in the Americas. terror birds such as phorohacus are also depicted. like the smilodon reference, their time on this earth was far and away over in Egypt by 10k bc. Wooley mammoths did exist at this time, finally becoming extinct 3 or 4 k bc. all three of these animals were depicted at least 40 percent larger than they actually were. this movie, while somewhat entertaining, was frustrating on many levels when considering historical accuracies. smelted and engraved iron sWords, telescopes, written languages, and,oh yeah, the pyramids at Giza were being built with mammoths and slave labor. hmmmmm..........