نتایج جستجو برای: early aptian
تعداد نتایج: 686306 فیلتر نتایج به سال:
Premise of research. During the ongoing investigation of Upper Triassic–Lower Cretaceous plant macrofossils from Svalbard, Norway, some ginkgoalean leaf fossils were found from Carnian and Aptian deposits of Spitsbergen and Edgeøya that represent new ginkgophyte species. One new species is described asBaiera aquilonia sp. nov., and one ginkgophyte leaf is assigned to Ginkgoites sp. Along with t...
the echinoid fauna of basab area (aptian), northwest of kerman, is fairly rich and diverse, represented by pygaulidae, acropeltidae, emiratiidae, toxasteridae, holectypidae, stomechinidae and saleniidae. four regular echinoid species, among which three are new, assigned to genus tetragramma agassiz, are described and illustrated in the present paper. the new species are tetragramma basabensis, ...
Early Cretaceous (late Barremian – early Aptian) fissure fill deposits near Balve, North Rhine Westphalia, Germany, have yielded a rich continental vertebrate fauna over the course of last two decades. More than 250 fragmentary specimens, including more 150 osteoderms (i.e., granicones), represent late helochelydrid Helochelydra nopcsai , which had previously been reported from UK, France, and ...
Abstract The breakup of Gondwana resulted in sedimentary deposits recording lacustrine to marine environmental transitions the South Atlantic rift basins during Early Cretaceous. Currently, ambiguity pervades our understanding timing and orientation initial seawater incursion. Here we investigated hydrocarbon biomarkers sediments from two drill cores off West Africa with stratigraphic coverage ...
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