[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
so, would it be surprising, or not, to find an almost identical specimen of a dino (say, allosaurus)....
in strata 30 million years apart with virtually no change?
Or does the environment of post-Cretaceous Aves allow for a species to remain
virtually unchanged for many millions of years?