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Re: Frenguellisaurus ischigualastensis



In a message dated 1/15/99 7:07:18 PM EST, pharrinj@plu.edu writes:

<< So, to answer your question, no, *Megalosaurus*, *Allosaurus*, and
 *Giganotosaurus* do not form a natural group, as far as we can tell. >>

Sure they do. It's called Neotheropoda or Carnosauria, depending on whether
_Megalosaurus_ is classified as a ceratosaurian or carnosaurian. Of course,
the three genera >by themselves< don't form a natural group, since none of the
three is ancestral to the other two.