http://dinosauria.ucoz.com/ Site news Tue, 16 Sep 2008 10:02:44 GMT uCoz Web-Service Chilantaisaurus tashuikouensis from the Cretaceous (Aptian–?Albian or Upper Cretaceous)Ulansuhai Formation of Inner Mongolia, which has been recovered as a derived member of both Allosauroidea and Spinosauroidea by numerical phylogenetic analyses. Redescription of the type material of C. tashuikouensis reveals an unusual combination of morphological features that render determination of its systematic position problematic. It possesses anatomical features that have been proposed as synapomorphies of Neotetanurae: a preacetabular fossa on the ilium, and a wedge-shaped crosssection of the shaft of the thi...]]> http://dinosauria.ucoz.com/news/2008-09-16-64 dinosauria http://dinosauria.ucoz.com/news/2008-09-16-64 Tue, 16 Sep 2008 10:02:44 GMT result of among-lineage species sorting. We here reassess the results of this study, and additionally carry out novel analyses testing for within-lineage patterns in body size evolution in Mesozoic birds. We demonstrate that the nonphy...]]> http://dinosauria.ucoz.com/news/2008-09-16-63 dinosauria http://dinosauria.ucoz.com/news/2008-09-16-63 Tue, 16 Sep 2008 09:59:16 GMT years ago, is a classic example of an evolutionary radiation with supposed competitive
replacement. A comparison of evolutionary rates and morphological disparity of basal dinosaurs and their chief “competitors,” the crurotarsan archosaurs, shows that dinosaurs exhibited lower disparity and an indistinguishable rate of character evolution. The radiation of Triassic archosaurs as a whole is characterized by declining evolutionary rates and increasing disparity, suggesting a decoupling of character evolution from body plan variety. The results strongly suggest that historical contingency, rather t...]]> http://dinosauria.ucoz.com/news/2008-09-16-62 dinosauria http://dinosauria.ucoz.com/news/2008-09-16-62 Tue, 16 Sep 2008 09:56:02 GMT probably have been brought about by direct adjustment of the angle of attack of the wing, by raising or lowering the trailing edge from the root using the legs if, as is indicated in soft-tissue specimens of a number of unrelated pterosaur species, the...]]> http://dinosauria.ucoz.com/news/2008-09-11-61 dinosauria http://dinosauria.ucoz.com/news/2008-09-11-61 Thu, 11 Sep 2008 12:50:00 GMT approximately equally used rapid and slow locomotor modes, although the...]]> http://dinosauria.ucoz.com/news/2008-09-11-60 dinosauria http://dinosauria.ucoz.com/news/2008-09-11-60 Thu, 11 Sep 2008 12:42:28 GMT comparable material is not found outside the carcass. The carcass contents include 63% clay, 16% ...]]> http://dinosauria.ucoz.com/news/2008-09-11-59 dinosauria http://dinosauria.ucoz.com/news/2008-09-11-59 Thu, 11 Sep 2008 12:39:16 GMT http://dinosauria.ucoz.com/news/2008-08-27-58 dinosauria http://dinosauria.ucoz.com/news/2008-08-27-58 Wed, 27 Aug 2008 07:33:22 GMT However, current evidence strongly suggests many polar dinosaurs (including sauropods, large and small theropods, and ankylosaurs of New Zealand) overwintered in preference to migration. Certain groups also appear more predisposed to overwintering based on their physical inability (related to biomechanics, natural history, or absolute size) to migrate, su...]]> http://dinosauria.ucoz.com/news/2008-08-27-57 dinosauria http://dinosauria.ucoz.com/news/2008-08-27-57 Wed, 27 Aug 2008 04:58:41 GMT http://dinosauria.ucoz.com/news/2008-08-19-56 dinosauria http://dinosauria.ucoz.com/news/2008-08-19-56 Tue, 19 Aug 2008 17:26:56 GMT http://dinosauria.ucoz.com/news/2008-08-14-55 dinosauria http://dinosauria.ucoz.com/news/2008-08-14-55 Thu, 14 Aug 2008 16:28:44 GMT