During the early Maastrichtian (ca. 71 Ma), important changes occurred in climate, weathering, sea level, biota, and the global carbon cycle. Global climate was characterized by rapid cooling within the long-term post-Santonian refrigeration of high-latitude surface and intermediate waters (Barrera, 1994; Huber et al., 1995). The intensity of continental weathering increased, as inferred from t...

Studying the evolution and biogeographic distribution of dinosaurs during the latest Cretaceous is critical for better understanding the end-Cretaceous extinction event that killed off all non-avian dinosaurs. Western North America contains among the best records of Late Cretaceous terrestrial vertebrates in the world, but is biased against small-bodied dinosaurs. Isolated teeth are the primary...

The sedimentary history and facies development of southern Egypt during the Latest Cretaceous Early Paleogene is summarized. G . eugubina Zone reported for first time from middle Egypt, where conglomerate usually marking a disconformity at Cretaceous/Tertiary boundary, absent. Uppermost Maastrichtian strata are attributed to M prinsii Zone, Late index foraminifer Abathomphalus mayaroensis (Boll...

the larger benthic foraminifera gyroconulina columellifera schroeder & darmoian, 1977 (type-locality: maastrichtian aqra formation of iraq) is described for the first time from two sections of the maastrichtian tarbur formation of the zagros fold-thrust-belt, sw iran. new details on its wall microstructure are provided. the microfacies is represented by bioclastic wacke-/pack-/grainstones with ...

The Late Cretaceous is marked by geodynamical changes including Africa-Eurasia convergence that resulted in the narrowing of Tethys Ocean and ophiolite obduction along southern margin various continental blocks eastern Tethys. Geochemical mineralogical analyses were performed on Shahneshin section (Zagros Basin - Tethys), to explore consequences this evolution oceanic circulation, estimate role...

Cretaceous multituberculate mammals of Europe are poorly known, as a rule represented by isolated teeth. The only exception is the Late Cretaceous (Maastrichtian) monotypic genus Kogaionon Riidulescu & Samson, 1996 from Romania, represented by a single skull, without dentaries, assigned to Kogaionidae Rhdulescu & Samson, 1996, Another kogaionid genus is Hainina Vianey-Liaud, 1979, represented b...

benthic foraminiferal assemblages from maastrichtian strata, gansserina gansseri-abathamphalus mayaroensis planktonic foraminiferal zone, of the abtalkh formation at aitamir section (west of the kopeh-dagh basin) were investigated in order to evaluate the palaeoenvironmental changes (organic matter flux and bottom-water oxygenation). maastrichtian faunal assemblages are well preserved and diver...

A latest Maastrichtian global warming event, which began approximately 450 k.y. and ended about 22 k.y. prior to the K/T boundary, is associated with the poleward migration of the warm-water planktonic foraminifer Pseudotextularia elegans. The warming event was apparently inititated by greenhouse warming due to the main outpouring of the Deccan Traps in India and is now well documented in the N...