[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: Eustreptospondylus



In a message dated 96-05-31 23:20:47 EDT, zooamy@zoo.latrobe.edu.au
(Adam Yates) writes:

>On Fri, 31 May 1996 NJPharris@aol.com wrote:
>
>> This is a neotetanuran (non-megalosaur tetanuran)
>> synapomorphy, correct?
>> 
>I used to think so now I'm not so sure. [...] My best guess is that
>a fenestra between the lateral wall of the maxilla and the maxillary
>sinus but with the medial wall remaining closed) is an apomorphy for
>the for the Tetanurae as a whole. It would then be secondarily lost
>in Torvosaurus.

Interesting!  Is it possible, then, that _Monolophosaurus_ and
_Piatnitzkysaurus_, say, are true megalosaurids, considering the
_Megalosaurus_-like premaxillary ramus of the maxilla of
_Monolophosaurus_?

>Adam Yates