The Coniacian non-marine portion of the Frontier Formation in southwestern Montana has been primarily studied stratigraphically, whereas its trace fossil record and relative sedimentological significance have remained overlooked so far. We present first description a assemblage reported from deposits exposed western Centennial Mountains, Beaverhead County, Montana. Three main lithofacies groups...

The study of planktonic foraminifera of the Ilam and Gurpi formations at Sarvestan area (SE of Shiraz) enables me to find the most standard biozones defined in mediterranean regions, especially Tethysian domain. Seven biozones were determined. Biozones I (Dicarinella concavata zone) and II (Dicarinella asymetrica zone) belong to the Ilam Formation and indicate the Late Coniacian-Early Santonian...

The hind limb of the lectotype Alectrosaurus olseni is described in comparison with other tyrannosauroids. In addition to autapomorphies for by previous workers, taxon possesses a specialized pes, where distal condyles metatarsals and most phalanges are strongly elevated beyond dorsal ventral surfaces shaft each bone, here as ‘pediculate’ condition. lectotype, previously reported Tyrannosaurus ...