[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Stegosaurian genera
In a message dated 1/28/01 6:05:56 PM EST, email@example.com writes:
<< "Yingshanosaurus jichuanensis" is from the Yingshan of China, considered
latest LJ. It is based on an almost complete skeleton about 5 m in
length, with wing-like parasacral spines. The name was first mentioned
in Dong, Zhou, and Zhang, 1983 (The dinosaurian remains from Sichuan
Basin, China: *Paleontologia Sinica*, whole number 162, New Series C, 23,
pp. 1-145), and a formal description is apparently complete but
unpublished. Glut's encyclopedia features a drawing of the skeleton.
The fact that both it and "Gigantospinosaurus" may be based on pretty
complete specimens leads me to suspect that they might be the same
animal, but I've been wrong before. >>
I have a 1984 date for this genus in the Dinosaur Genera List, but now that
you mention it I >think< I recall seeing the name in a caption to a pelvis in
the Sichuan monograph. My copy is buried, so if you or somebody happens to
have one handy, I'd appreciate it if it could be looked up. I've seen the
photos of the mounted skeleton and I cannot distinguish them from
Tuojiangosaurus. Those are not parasacral spines, they're shoulder splates
(my term for an osteoderm that is part plate and part spine); the drawing in
Don's encyclopedia doesn't match his description in this regard.
The earliest spelling I've seen is Gigantspinosaurus (1993), in a list of
Chinese ornithischians; the spelling Gigantospinosaurus appeared in 1999.
It's not entirely clear this is a stegosaur (but it probably is); it could
also be an iguanodontid of some kind with tall neural spines. I'd appreciate
any more information about it. Most likely it was described in a Chinese grad
student's dissertation that has yet to be published.