[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: PT paper
At 02:22 PM 3/30/99 EST, Dinogeorg wrote:
><< Which is fine: if the clade uniting Neornithes and _Cetiosaurus_ is the
> clade as that uniting Neornithes and _Triceratops_, then Dinosauria has
> priority and "Eusaurischia" is a junior synonym not to be used. If,
> instead, _Cetiosaurus_ is found to be closer to Neornithes than to
> _Triceratops_, then Eusaurischia is a useful term. >>
>(Gotta see that paper; my JVP 19(1) will likely arrive shortly after SVP
>cashes my dues check, now in the mail.)
The whole issue is pretty good, as I noted previously.
>Meanwhile: ARRGH! Not Cetiosaurus! Why not Diplodocus or Shunosaurus or some
>other better-known sauropod?
Okay, technically it would probably be _Saltasaurus_ by priority (in Wilson
& Sereno's paper). _Diplodocus_ was our first thought, and probably would
have been best overall (it is well known, and it was known when Marsh named
Sauropoda, unlike _Saltasaurus_). However, I wanted to see at least ONE of
the dinosaurs listed in Owen's British Fossil Reptiles (albeit not in
Dinosauria) get used as an anchor taxon for a major dinosaur clade.
(I *STILL* think Dinosauria should have been +_Iguanodon_, +_Megalosaurus_,
but I need a time machine to fix that priority...).
Okay, so the type of _Cetiosaurus_ sucks. On the other hand, the chances
the type is an animal other than a sauropod dinosaur is vanishingly remote.
(The same goes for _Megalosaurus_: although some might have complained that
it isn't well known, the type specimen is unquestionably a theropod dinosaur).
Speaking of PT, both Froelich's perrisodactyl paper (with an interesting
result concerning brontotheres: in some analyses, they came out within
Paleotheriidae) and Wilkinson's review of basal mammals deal with questions
of Phylogenetic Taxonomy.
Thomas R. Holtz, Jr.
Vertebrate Paleontologist Webpage: http://www.geol.umd.edu
Dept. of Geology Email:email@example.com
University of Maryland Phone:301-405-4084
College Park, MD 20742 Fax: 301-314-9661