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RE: Defunct genera and _Pekinosaurus galtoni_

> From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu]On Behalf Of
> Jaime A. Headden
> <<...and I have doubts about whether _Jurapteryx_ is a
> young _Archaeopteryx lithographica_.>>
> <Why?>
>   Read Howgate, 1984, 1985 (_Beginnings of Birds_,
> Viohl et al., (eds)), on the Eichtdtt *Archaeopteryx*
> which he first distinguished as a new species, *A.
> recurva* then as a new genus *Jurapteryx recurva.*
> Limb proportions do not appear to reflect trends in
> ontogeny of the other specimens, suggesting separation.

Ummm...  I'd wait a bit before accepting this information; perhaps some
whole multiple of three months (he said cryptically) :-)

(Note that Howgate did not in fact plot up the data in question, nor run any
real allometric analysis).

                Thomas R. Holtz, Jr.
                Vertebrate Paleontologist
Department of Geology           Director, Earth, Life & Time Program
University of Maryland          College Park Scholars
                College Park, MD  20742
Phone:  301-405-4084    Email:  tholtz@geol.umd.edu
Fax (Geol):  301-314-9661       Fax (CPS-ELT): 301-405-0796