[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: New guy
On Mon, 5 Feb 1996, T. Mike Keesey wrote:
> Hey all-
> I've been lurking on this list for a little while now, reckoned it was
> about time to come out and ask a few questions that have been puzzling
> me. (Sorry if you've heard 'em before, but there's no FAQ!)
> I was a dinosaur fanatic as a kid, but my enthusiasm wore off a bit.
> Getting on the Net put me back in touch with the dinosaurian world. So
> much has changed since I was gone! I'm trying to keep up, but I have a
> few questions:
> 1. What's all this Ceratopia stuff? Back in the days of my youth I never
> saw anything but CeratopSia. Someone get picky about the Latin or what?
Someone back way back when (Marsh, I think) was a little sloppy with his
Greek. The root in question is "o:ps, o:pos" (the colon indicating that
the o is long, i.e. an omega). The stem is "o:p-," meaning the correct
derivation is technically "ceratopian." The version with the "s" has
become pretty well entrenched in the vocabulary, though, and I continue
to use both.
> 2. Ditto for Therizinosauroidea and Segnosauria.
If you want to talk about the superfamily which includes all the known
segnosaurs, the ICZN says it has to be Therizinosauroidea, as
_Therizinosaurus cheloniformis_ was the first included genus named. If
you want to make it an order or anything else above a superfamily, you
can call it Segnosauria or whatever else you want.
> 3. Did _Mononykus_ and the other alvarezsaurids have an arctometatarsalian
> pes? I seem to remember reading that somewhere... If so, does that show
> that birds are descended from arctometatarsalians, not maniraptorans?
The answers to your questions are "yes" and "not necessarily,"
respectively. I tend to think of arctometatarsalians as a subset of the
birds, which are a subset of the maniraptorans, although Tom Holtz :-),
among others, will disagree.
Pacific Lutheran University
Tacoma, WA 98447
"If you can't convince them, confuse them." -- Harry S. Truman