A detailed study of calcareous nannofossil assemblages from twelve uppermost lower Barremian–lower Aptian sections in the Subbetic Domain Betic Cordillera was performed. Seven new species (Crucibiscutum bastetanum, Crucibiscutum gracile, Chiastozygus lamprostauros, Cyclagelosphaera platyaspis, Lithraphidites aichmoides, pugio, and Rhagodiscus sicutclipeus) are described, one is emended (Lithrap...

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 ...

The rock successions of the Chia Gara Formation were studied at two surface sections (Barsarin and Rania) from North-Eastern Iraq. detailed sedimentological study reveals that formation consists basically thin-bedded black limestone, dolomitic marly bituminous shales, Ammonitic limestone. petrography results showed various petrographic components as Ammonites, calcispheres, radiolarian, silicat...

Drought limits tea yield and can also negatively impact its quality. In this study, constant humidity dry–wet alternating modes were compared to determine their impacts on soil nitrogen transformation ammonia-oxidizing microorganisms. was found reduce the NH4+-N concentration under mode, NO3−-N highest in 60% water-holding capacity (WHC) soil. Soil content increased rapidly after rewatering, in...

Nautilus remains of great interest to palaeontologists after a long history of actualistic comparisons and speculations on aspects of the palaeoecology of fossil cephalopods, which are otherwise impossible to assess. Although a large amount of work has been dedicated to Nautilus ecology, conch geometry and volumes of shell parts and chambers have been studied less frequently. In addition, altho...

Abstract Recent discovery of a previously unknown outcrop in the vicinity Zengővárkony lime-kilns (Mecsek Mountains, Hungary) provided few identifiable upper Oxfordian brachiopods that exhibit truly Mediterranean (Tethyan) character. Dating is based on rich ammonite fauna: Benetticeras benettii; Trimarginites ex gr. trimarginatus; Orthosphinctes (Orthosphinctes) tiziani clearly indicate Late Ox...