An assemblage of large and robust pedunculate scalpellomorph cirripede barnacles from the Maastrichtian Kalaat Senan (Tunisia) is described, their stratigraphical position within Abiod El Haria formations noted. Four taxa are documented, three which confined to area, namely Pachyscalpellum heltzeli , Cretiscalpellum robaszynskii sp. nov. Diotascalpellum sp.; fourth, curvatum was previously reco...

Abstract The standard reconstruction of species Orbitoides d’Orbigny into a single lineage during the late Santonian to end Maastrichtian is based upon morphometric data from Western Europe. An irreversible increase in size embryonic apparatus, and formation greater number epi-embryonic chamberlets (EPC) with time, regarded as main evolutionary trends used discrimination. However, assemblages C...

We report on new collections of cephalopods (ammonites and nautilids) from the Cretaceous-Paleogene (K-Pg) successions Corsicana Kincaid formations exposed along Brazos River in Falls County, Texas. An abundant fauna eight species comprising four genera ammonites is described Formation, including Discoscaphites mullinaxorum n. sp. The presence aptychi (probably lower jaws) Eubaculites, as well ...

Abelisaurid theropods are well known in Cretaceous beds along South America, particularly Patagonia. However, the record of latest abelisauroids is still far from satisfactory. Until recently, few taxa were described Maastrichtian beds: Carnotaurus sastrei and Quilmesaurus curriei, but also perhaps Abelisaurus comahuensis. In this contribution, we describe a new genus species (Niebla antiqua ge...

Bothremydidae is the most abundant clade of turtles in Campanian and Maastrichtian (Upper Cretaceous) fossil record southwestern Europe. Several members Foxemydina Gaffney, Tong & Meylan, 2006 are known an area that includes Southern France North-Eastern half Spain. The problematic ‘Polysternon’ atlanticum worst characterized, lacking a diagnosis allows its specific validity to be confirmed...

In this study biostratigraphy of the Upper Cretaceous deposits (Gurpi Formation) in Sepidan section located in the Interior Fars basin (SW Iran) was studied. The Gurpi Formation in this section consists of 360 m lime shale, argillaceous limestone and shale laid continuously on the Ilam Formation and with a paraconformity under the Pabdeh Formation. Nine genera and 27 species of planktonic foram...

Abstract Reconstructing dinosaur trophic structure prior to the Cretaceous–Paleogene (K–Pg) boundary may provide information about ecosystem organization and evolution. Using calcium isotopes, we investigate preserved biogenic isotope compositions in a set of teeth from three continental formations Alberta, Canada, assess latest Cretaceous food web structure. Tooth enamel δ44/42Ca values are pr...