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RE: Podokesauridae (RE: tiny-armed theropods)



What was your reason in 1994 for elevating it to an "-oidea"?  Gregory Paul 
originally used Coelophysidae for the whole group including *Dilophosaurus* and 
coelophysids in the strict sense (his Coelophysinae).  

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> Date: Thu, 13 Oct 2011 09:51:02 -0400
> From: tholtz@umd.edu
> To: martyniuk@gmail.com; tijawi@gmail.com
> CC: dinosaur@usc.edu
> Subject: Podokesauridae (RE: tiny-armed theropods)
>
> > From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu]
> > On Behalf Of Matthew Martyniuk
> >
> > It's worth remembering that our current "stable" names became
> > that way after unseating previously stable names, sometimes a
> > matter of a decade or two ago (anybody remember
> > Podokesauridae, which was supplanted by Coelophysidae in the
> > early 1990s for no discernible reason)?
>
> Given that I and Greg Paul and a few others are largely responsible for that, 
> here is the reason:
>
> What positive evidence is there that Podokesaurus is in any way, shape, or 
> form more closely related to Coelophysis & company than
> to (for example) tetanurines? Or basal to neotheropods?
>
> The characters originally used to unite Podokesaurus, Coelophysis, 
> "Syntarsus" & friends was: little theropod that lived before the
> Middle Jurassic. Not really a strong case for monophyly there...
>
> 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
> http://www.geol.umd.edu/~tholtz/
> Fax: 301-314-9661
>
> Faculty Director, Science & Global Change Program, College Park Scholars
> http://www.geol.umd.edu/sgc
> 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
>