The cranial anatomy of the flat-skulled hadrosaurine Edmontosaurus regalis (Ornithischia: Hadrosauridae) is extensively described here, based on the holotype and paratype collected from the middle part of the Horseshoe Canyon Formation in southern Alberta. Focus is given to previously undocumented features of ontogenetic and phylogenetic importance. This description facilitates overall osteolog...

The processes initiating the first cooling step of last greenhouse-to-icehouse transition, from 90 million years ago (Ma) onward still remain enigmatic. While combination mountain uplift and continental weathering has been proposed as a major sink for atmospheric CO 2 climate driver over geological timescales, this hypothesis is much debated its potential importance in triggering late Cretaceou...

The Late Cretaceous anuran Hungarobatrachus szukacsiSzentesi & Venczel, 2010 was erected for isolated ilia and tibio-fibulae from the Santonian-age Iharkút locality, in northwestern Hungary. On strength of ilial features, H. szukacsi interpreted as a neobatrachian possible ranoid, making it only pre-Cenozoic occurrence both clades Laurasia. New first examples skull bones (incomplete frontoparie...

Based on a review of troodontid specimens from the territories of the former Soviet Union, including new discoveries from Uzbekistan, two dental morphotypes can be distinguished among Troodontidae from the Cretaceous of Asia: (1) unserrated teeth, present in Mei from Lujiatun (China; Early Cretaceous: Hauterivian-Barremian), an unnamed taxon from Hövöör (Mongolia; Early Cretaceous: Aptian-Albia...