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Re: Nanshiungosaurus temporal range

Tim Donovan wrote-

>   Is N. bohlini (c Aptian) really congeneric with N. brevispinus from the
> terminal Maastrichtian Pingling formation? It is unusual for a dinosaur
> genus to span two stages, let alone several. Could it have persisted due
> biogeographical isolation of southern China?

They are probably not congeneric.  See
http://www.cmnh.org/dinoarch/2000Oct/msg00112.html for a somewhat out of
date summary.

Mickey Mortimer