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Re: Bison alticornis
> Would I be correct in thinking that this beast was originaly named from a
> single horn which had been disturbed and was found in sediments much younger
> than those in which it had been originaly fossilized-this led Marsh to
> belive it could not be a dinosaur. He identified it as a species of extinct
> bison-hence the name-I belive the animal turned out to be a horned dinosaur.
Actually I think the original horn came from the Denver Formation,
which is quite late Maaastrichtian.