Another thought occurred to me the other day: You know how the "evolutionists" say that dinosaurs started out small and "evolved" into larger forms? Well, they may have started small and grew because of longevity and the fact that the pre-flood world was conditioned to allow them to grow that size but after the flood they could no longer grow that size so in fact they got smaller. So really they got smaller over time and didn't live long enough to grow to that size. So the difference between, say Pachysephalosaurus and Micropachysephalosaurus maybe not be that they are separate versions of each other but perhaps the micro version was actually a post-flood version of the Pachysephalosaur so to speak.