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Re: The Only _Scelidosaurus_ in the Western Hemisphere
On 2/11/2011 9:33 AM, Dan Chure wrote:
Kevin Padian referred isolated scutes from the Kayenta Formation of
Arizona to Scelidosaurus. I'm not sure if that assignment still holds.
Padian, K. 1989. Presence of the dinosaur Scelidosaurus indicates
Jurassic age for the Kayenta Formation (Glen Canyon Group, northern
Arizona). Geology; May 1989; v. 17; no. 5; p. 438-441
Yes -- that'd be terrific if true, and certainly not impossible on
paleobiogeographic grounds, but it's been largely discounted (e.g.,
Norman et al., 2004) on the basis that the scutes aren't really
identifiable to that level and could just as well belong to
_Scutellosaurus_. Also, given that relatives of _Scelidosaurus_ are
found far and wide (e.g., _Emausaurus_, _Tatisaurus_, and of course
_Scutellosaurus_), I'd even expect _Scelidosaurus_ or something very
much like it to be eventually found 'round these parts in Moenave or
Kayenta strata...that's why _Scelidosaurus_ fits in so well at the St.
George Dinosaur Discovery Site!
Norman, D.B., Witmer, L.M., and Weishampel, D.B. 2004. Basal
Thyreophora; pp. 335-342 in Weishampel, D.B., Dodson, P., and Osmólska,
H. (eds.), The Dinosauria, Second Edition. University of California
Jerry D. Harris
Director of Paleontology
Dixie State College
225 South 700 East
St. George, UT 84770 USA
Phone: (435) 652-7758
Fax: (435) 656-4022
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