Internal moulds of rudist bivalves from the basal Exu Formation western Araripe Basin, northeastern Brazil, are identified as Early Cretaceous (Barremian to Aptian) radiolitidin caprinuloideid genus cf. Amphitriscoelus Harris and Hodson. The rudists occur part a sparse assemblage remané fossils in Formation, fluvial sandstone resting disconformably on Santana Group likely have been derived shal...

calcareous nannofossils in boundary of tirgan and sarcheshmeh formations at qalezo section have been studied. this section is situated in the west of kopet-dagh basin. in this study 35 nannoplankton species of 17 genera were identified. according to the first occurrence of index species and fossil assemblages two calcareous nannofossil biozones (cc7-cc8) of sissingh (1997) have been recognized....

in this study, calcareous nannofossils at the boundary between tirgan and sarcheshmeh formations at taherabad and mozduran sections have been studied. these sections are located in the eastern kopet-dagh basin. 22 nannoplankton species of 14 genera in taherabad section and 20 species of 14 genera in mozduran section were identified. according to the first occurrence of index species and fossil ...

New species of Leptotarsus (Tipulidae s.str.) are described from the Early Cretaceous beds of Brazil (Santana Fm. Aptian/Albian, ca. 112 Mya) and Spain (La Huérguina Fm., Late Barremian, ca. 126 Mya), vis. L. grimaldii sp. nov., L. cretaceus sp. nov., L. martinsnetoi sp. nov., L. buscalioniae sp. nov., L. ibericus sp. nov. and L. contractus sp. nov. Males of three species possess extremely long...

On the Barents Shelf, northernmost and least explored hydrocarbon province of Norwegian Continental Upper Jurassic organic-rich shales have traditionally been given most attention as these represent prolific source rock unit region. However, in western frontier areas is too deeply buried. By combining high-resolution 2D seismic data, well logs, digitalized Rock-Eval this study documents lateral...

Shifting palaeoceanographic and palaeoclimatic conditions together with fluctuating eustatic sea levels during the Early Cretaceous Aptian stage led to a globally widespread deposition of organic-rich marine sediments designated Oceanic Anoxic Event 1a. Here detailed lithostratigraphic geochemical study is presented for 35.6 m Cabó Formation, part Organyà Basin, North-east Spain, assess intermi...

Sauropod teeth from six localities in Japan were reexamined. Basal titanosauriforms were present in Japan during the Early Cretaceous before Aptian, and there is the possibility that the Brachiosauridae may have been included. Basal titanosauriforms with peg-like teeth were present during the "mid" Cretaceous, while the Titanosauria with peg-like teeth was present during the middle of Late Cret...