RE: Bipedalism and Arboreality.

["Thomas R. Holtz, Jr." <tholtz@geol.umd.edu>]

> From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu]On Behalf Of
> Steve Gatesy
>
> Also, I wanted to thank Tim Holtz for the all the references to my work.
> If you can't find any of it during a search, it's because he's spelled my
> name wrong (GatESy, not GatSEy)!
>
>
D'OH!!!!!!!!!

Sorry...

On an unrelated (sauropod phylogenetic) note: in the Wilson et al. report on
titanosaur tails in the latest JVP, the authors point out the problematic
distribution of biconvex distal caudals in sauropods.  Diplodocoids have
them, _Cetiosauriscus_ has them, titanosaurs have them, _Camarasaurus_ does
NOT have them, and the tails of other neosauropods are not sufficiently well
known to say.  These structures might thus be basal to Neosauropoda (and
reserved in _Camarasaurus_).  If so, this would remove the main reason for
placing _Cetiosauriscus_ within Diplodocoidea.  In fact, Wilson et al.
consider _Cetiosauriscus_ a basal neosauropod of uncertain relations, rather
than a diplodocoid.

Note that this report is a few pages before the comment and reply concerning
the work of Stephen M. Gatesy and Kevin M. Middleton.  (Just wanted to spell
it correctly for a change...).

                Thomas R. Holtz, Jr.
                Vertebrate Paleontologist
Department of Geology           Director, Earth, Life & Time Program
University of Maryland          College Park Scholars
                College Park, MD  20742
http://www.geol.umd.edu/~tholtz/tholtz.htm
http://www.geol.umd.edu/~jmerck/eltsite
Phone:  301-405-4084    Email:  tholtz@geol.umd.edu
Fax (Geol):  301-314-9661       Fax (CPS-ELT): 301-405-0796