Re: tooth question

[smithjb@sas.upenn.edu (Joshua Smith)]

Phillip Bigelow wrote:
> Moral of the story:  If it's a "big ripper of a tooth", and it's latest
> late Maastrichtian in age, it probably fell off of a _T. rex_.
> _Albertosaurus_ and _Gorgosaurus_ may have still been around in the
> early Maastrichtian, but after that, the time of their ultimate demise
> gets a little foggy.

        This doesn't really hold in the Lance Formation, which is almost 
no different from the Hell Creek.


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