[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Dollodon status questioned



From: Ben Creisler
bh480@scn.org

A new paper:

Andrew T. McDonald (2011)
The status of Dollodon and other basal iguanodonts (Dinosauria:
Ornithischia) from the upper Wealden beds (Lower Cretaceous) of Europe. 
Cretaceous Research advance online publication
 doi:10.1016/j.cretres.2011.03.002 

Abstract
Dollodon bampingi was recently named based upon a specimen from the
Bernissart Quarry that had previously been referred to Mantellisaurus
atherfieldensis. The initial diagnosis of Dollodon did not adequately
distinguish it from Mantellisaurus or from other basal iguanodonts,
necessitating a reassessment of the material. Firsthand examination of the
holotypes of the two taxa and numerous other basal iguanodont specimens, as
well as a principal components analysis of basal iguanodont dentaries, did
not find any morphological features to justify the distinction of Dollodon
from Mantellisaurus. Dollodon bampingi is thus best considered a nomen
dubium and junior synonym of Mantellisaurus atherfieldensis. Furthermore,
the recent referral of the species Iguanodon seelyi to the genus Dollodon
is not supported; I. seelyi is indistinguishable from Iguanodon
bernissartensis, and is considered a junior synonym of that species.
Finally, the recently named taxon Proplanicoxa galtoni, also based upon a
specimen formerly attributed to Mantellisaurus atherfieldensis, is
considered a nomen dubium and probable junior synonym of M.
atherfieldensis. Thus, only two species of large-bodied basal iguanodont
should be recognized from the upper Wealden beds of England and Belgium:
Mantellisaurus atherfieldensis and Iguanodon bernissartensis.

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WD3-52FVD94-2&_us
er=10&_coverDate=03%2F24%2F2011&_rdoc=2&_fmt=high&_orig=browse&_origin=brows
e&_zone=rslt_list_item&_srch=doc-info(%23toc%236755%239999%23999999999%23999
99%23FLA%23display%23Articles)&_cdi=6755&_sort=d&_docanchor=&_ct=13&_acct=C0
00050221&_version=1&_urlVersion=0&_userid=10&md5=6c63d8f35f383081c551d8b2817
acf57&searchtype=a


--------------------------------------------------------------------
mail2web.com ? Enhanced email for the mobile individual based on Microsoft®
Exchange - http://link.mail2web.com/Personal/EnhancedEmail