The Capitan Reef Complex in West Texas is famous for its high prevalence of early marine cements, unusual a Phanerozoic platform, leading some to suggest that Precambrian styles carbonate sedimentation enjoyed Permian encore. Here, we use patterns stable Ca, Mg, C and S isotopes better understand the environmental driver(s) enigmatic cementation. We find calcite most enriched 44Ca has ?34S valu...

The Triassic was a turning in the history of biodiversity: bracketed by two major biotic crises, characterised biotic, climatic and tectonic events, it saw transition from Palaeozoic to Modern evolutionary faunas. Herein, we propose first synthetic analysis diversity marine brackish-water ostracods over entire Triassic, light palaeoecological, palaeoenvironmental palaeogeographical contexts. Al...

Ammonoids and conodonts, being characterized by exceptionally high background rates of origination and extinction, were vulnerable to global environmental crises, which characteristically intensified background rates of extinction. Thus, it is not surprising that these taxa suffered conspicuous mass extinctions at the times of three negative Early Triassic global carbon isotopic excursions that...

The Los Menucos Complex (North Patagonian Massif, Río Negro province, Argentina) has been long regarded as Late Triassic in age. A Dicynodontipus-dominated record is historically known from this complex and particularly the Puesto Tscherig locality. Here we report Vera site, where a new track-bearing horizon was discovered within 73-m-thick volcano-sedimentary succession. Footprints site are mo...

The C 1 coal of Latest Permian during mass extinction in eastern Yunnan was studied to reveal the terrestrial paleoenvironment and influence geological events on coal-formation extinction. An analysis Rare Earth Elements (REEs) conducted from Yantang Mine Xuanwei, Province, which deposited latest Permian. A total 24 samples coals, partings, roofs floors were taken fresh face underground mine. r...

The monotypic genus Alekhosara Aristov, 2008 from the locality Novo-Alexandrovka (Russia, Orenburg Region; Upper Permian, Severodvinian Stage) is briefly redescribed and transferred family Liomopteridae (order Reculida) to Locustavidae Orthoptera). Thus, this possibly a most ancient representative of orthopteran suborder Caelifera, previously known since Early Mesozoic only.

The aim of this study is to determine the stratigraphic position bauxite deposits in Ayrancı region, where most important mineralization Bolkardağı region located. In context, age will be determined by determining erosion surface associated with features during formation and according its side rocks. there are Permian-Cretaceous aged rocks belonging Union, one main tectonic units forming Centra...

Collapsed reflections of lower Ordovician carbonates and upper Carboniferous-lower Permian coal-bearing strata occur below the middle Shihezi Formation in Hangjinqi area, northern Ordos Basin. This study takes advantage three-dimensional seismic data, logging core data well-testing to investigate genesis collapsed their implications for hydrocarbon potential. These collapse structures have a su...