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From: owner-dinosaur@usc.edu
[mailto:owner-dinosaur@usc.edu]On Behalf Of Henri Rönkkö
Sent:
Monday, October 08, 2001 1:50 PM
To:
dinosaur@usc.edu
Subject: Plesiomorphic features for various theropod
clades
Hello!
I long to know some plesiomorphies of various
theropod clades. There are databases in the net, but I've found it somewhat
difficult to extract information from them. I don't need all of the
plesiomorphies, only some of the most important ones. In the following, I will
be using the nomenclature the way Sereno does in his 1999 paper "Dinosaur
evolution".
>
>
Thanks in advance,
> Henri Rönkkö
>
> PS. This is important.
I
think you want "synapomorphies" (shared derived characters), not
"symplesiomorphies" (shared primitive characters). Otherwise, a good
list of symplesiomorphies might include a head capsule, a spinal chord, bone,
collagen, mitochondria, DNA, etc. ... :-)
More to the point,
check out the following (slightly out of date) information from my Fall 2000
dinosaur class notes on theropods:
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
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