نتایج جستجو برای: tournaisian
تعداد نتایج: 98 فیلتر نتایج به سال:
Abstract The expansion of land plants is considered to have played a key role in triggering the Late Paleozoic Ice Age (LPIA), but evidence linking climatic events terrestrial floral changes limited. Here, we generated bulk carbonate ?13C, conodont ?18O and 87Sr/86Sr profiles from lowermost Carboniferous South China Vietnam order investigate their relationship contemporaneous plant evolution. C...
The fossil record of arborescent lignophytes shows an increasing anatomical diversity during the Tournaisian (360-347 Mya), suggesting a morpho-anatomical diversification following extinction progymnosperm Archaeopteris Dawson, 1871 at Devonian-Carboniferous boundary. This view has been partly constructed on recent investigations Early Carboniferous deposits in eastern Australia. In this paper,...
The Pre-Mesozoic units exposed in the inner Northern Apennines mostly consist of Pennsylvanian-Permian successions unconformably deposited on a continental crust consolidated at end Variscan orogenic cycle (Silurian-Carboniferous). In Apennines, exposures this crust, Cambrian?-Devonian age, have been described Tuscany, Elba Island (Tuscan Archipelago) and, partly, scattered and isolated outcrop...
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