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Re: pdf request

So does that mean that the anapsid condition was NOT the ancestral condition of 
the amniotes? Sounds kind of strange to me because the first tetrapods lacked a 
t.f. entirely. The mesosaurs are definately mysterious-why do they seem to 
appear out of nowhere? 

From: "Thomas R. Holtz, Jr." <tholtz@umd.edu> 
To: tyazbeck@comcast.net 
Cc: "DML" <dinosaur@usc.edu> 
Sent: Tuesday, June 12, 2012 1:57:34 PM 
Subject: Re: pdf request 

On Tue, June 12, 2012 12:25 pm, tyazbeck@comcast.net wrote: 
> Anyone have the new paper on Mesosaurus being a synapsid available? Other 
> references on the mesosaurs would be good too. THanks in advance 


And the paper does not argue that Mesosaurus was a synapsid: rather, it 
observes that it had a lateral temporal fenestra. And as such either the 
ltf appeared in the ancestor of all amniotes and was subsequently covered 
over/lost in various subbranches or it evolved multiple times. 

Thomas R. Holtz, Jr. 
Email: tholtz@umd.edu        Phone: 301-405-4084 
Office: Centreville 1216 
Senior Lecturer, Vertebrate Paleontology 
Dept. of Geology, University of Maryland 
Fax: 301-314-9661 

Faculty Director, Science & Global Change Program, College Park Scholars 
Fax: 301-314-9843 

Mailing Address:        Thomas R. Holtz, Jr. 
                        Department of Geology 
                        Building 237, Room 1117 
                        University of Maryland 
                        College Park, MD 20742 USA