Re: New Paper and a few comments

[Justin S Tweet <thescelosaurus@juno.com>]

On Tue, 28 Mar 2000 15:00:54 -0600 (CST) christian farrell kammerer
<cfkammer@midway.uchicago.edu> writes:
[snip]

> On a completely different topic, since there is currently much talk of
> basal ornithopod biogeography on the list, I would like to bring up the
> assignment of UCMP 49611, a right dentary tooth from the Late Jurassic
> (Kimmeridgian) of England, to Bugenasaura sp. by Galton (1999). If this
> assignment is correct, it adds further support to the established North
> Americo-European faunal link already evidenced by allosauroids and
> iguanodontians. However, I feel that the ramifications of this
assignment
> should be taken with a grain of salt. Firstly, this assignment would 
> make Bugenasaura a DANG long-lived genus. The problem here is the 
> extremely sketchy nature of the collection data (is it really from
England? 
> Who collected it?), a fact noted by Galton, who puts forth mislabeling 
> as a definite potential. 

   Because *Bugenasaura* is not a particularly derived ornithopod,
despite its late age, I would not at all be surprised to find Late
Jurassic teeth that are similar to those of *Bugenasaura*.  If
*Bugenasaura* is a basal ornithopod, as it is usually considered to be,
there would have had to have been similar animals in the LJ, because more
derived ornithopods are known from then.  
   However-as you pointed out, the LJ age of this specimen and the late
LK (late Maastrichtian) age of *Bugenasaura* make it very unlikely the
two are in the same genus, unless of course mislabeling
occurred.-*Thescelosaurus*  

> -Christian Kammerer

------------------------------------------------------
Justin Tweet, *Thescelosaurus*
See "Thescelosaurus!": http://personal2.stthomas.edu/jstweet/index.htm

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