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Re: Tyrannosaurus imperialis?
On Mon, 22 Jun 1998 email@example.com wrote:
> No one disputes that _Deinodon_ is a tyrannosaurid, but it's still an
> invalid genus because it is based on indeterminate material. As a _nomen
> dubium_, _Deinodon_ cannot be the nominative genus for any subfamily,
> family, or superfamily. ICZN rules.
That's certainly opposite to my impression!
Are the ICZN rules on the web anywhere?
At any rate, DinoGeorge has already assured us that even though _Deinodon_
was named before _Tyrannosaurus_, Deinodontidae was named after
Tyrannosauridae (which comes a a mighty relief to me).
> > There are other cases where families are named
> > after invalid/dubious genera: Ceratopsidae, Caenagnathidae, etc.
> You may soon be adding Hadrosauridae, Titanosauridae, and perhaps
> Troodontidae to the list of families named after invalid genera
> (which would therefore makes the families invalid).
I thought _Hadrosaurus_ was long thought to be dubious. (Yet we still use
Hadrosauridae, -oidea, -inae...)
> Caenagnathidae remains valid; the fact that _Caenagnathus_ was sunk as a
> junior synonym of _Chirostenotes_ (was it by Hans-Dieter Sues?) doesn't
> change a thing. _Caenagnathus_ is still in the family (as a
> subjective junior synonym of _Chirostenotes), and it is not a nomen
> dubium. Caenagnathidae stays.
--T. Mike Keesey <firstname.lastname@example.org>
DINOSAUR WEB PAGES -- http://www.gl.umbc.edu/~tkeese1/dinosaur/index.htm