Hey Drnos, I read the Yahoo article you posted. Very interesting. However, as the article states, "the latest discovery shows some mammals, the Repenomamus or 'reptile mammals,'" ate the dinosaurs. Mammals proper certainly didn't appear in force till after the K/T extinction of 65 million years ago, and therefore could not have eaten dinosaurs. The putative missing links however, the quasi-mammal/quasi-reptile intermediate species such as repenomamus as cited in the article, or even older specimens, such as the late triassic therapsids, do not support your additive claim of cave paintings of dinosaurs. Cave paintings of mammoths or giant sloths perhaps. Interesting article though. The tiny mammal-like creatures the article mentions lived a mean existence till the dinosaurs started dieing out. Small, secluded, and opportunistic, our tiny ancestors thrived once a new niche was opened up to them after cataclysmic events did away with the dinos, then there was no turning back. Look at us now!