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Re: Will the real Tanystropheus please stand up?!
>I've heard recent talk here about that long-necked fish-eater
>Tanystropheus, and I wondered if anyone could tell me that
>creature's true identity. I have in the past seen it classified
>as a true lizard, an eosuchian, a primitive Euryapsid, and most
>recently as an "archosauromorph", a group of "uncles" to the
>archosaus that seems to consist solely of Tanystropheus and the
>rhyncosaurs (which I had always heard before were related to the
>Tuatara). Can someone fill me in about this "archosauromorph"
>group and where Tanystropheus fits in to it all?
Archosauromorpha is the group which contains the Archosauria, not the
"uncles" to the archosaurs!
Archosauromorpha = all reptiles sharing a more recent common ancestor with
birds & crocs than with lizards & tuataras.
Archosauria = the most recent common ancestor of birds & crocs & all of
that ancestors descendants.
(And, you did not mention above that Coelophysis spent a few years as a
species of Tanystropheus!).
Thomas R. Holtz, Jr. Phone: 703-648-5280
Vertebrate Paleontologist Fax: 703-648-5420
firstname.lastname@example.org ------------> email@example.com
U.S. Geological Survey -------------> University of Maryland
Branch of Paleontology & Stratigraphy ----> Department of Geology
MS 970 National Center
Reston, VA 22092 -------------> College Park, MD 20742