Rhaetian strata from the Nayband Formation of the Tabas block, East- Central Iran, were studied palynologically. The materialexamined contained moderately diverse and well-preserved dinoflagellate cyst assemblages which lead to the identification ofRhaetogonyaulax rhaetica Zone. The assigned age of this dinozone (Rhaetian) is justified by plant fossils such as Equisetitesarenaceus, Scytophyllum...

West Carpathian Mesozoic paleogeographic development indicates the effect of a left lateral shift of the Alpine- Carpathian microcontinent along the European shelf since the Early Jurassic. The evolution during Late Triassic/Early Jurassic was controlled by convergence along the border of the Meliata Ocean and by contemporaneous divergence along the Middle Atlantic/Penninic rift. During Mid-Cre...

A major macroevolutionary question concerns how long-term patterns of body-size evolution are underpinned by smaller scale processes along lineages. One outstanding long-term transition is the replacement of basal therapsids (stem-group mammals) by archosauromorphs, including dinosaurs, as the dominant large-bodied terrestrial fauna during the Triassic (approx. 252-201 million years ago). This ...

The emplacement of the Siberian Traps, Central Atlantic Magmatic Province (CAMP) and Wrangellia have been linked to end-Permian, end-Triassic mass extinctions, Carnian Pluvial Episode (CPE), respectively. Exploring timing, eruptive styles, volatile degassing these Large Igneous Provinces (LIPs) is crucial understand their causal link catastrophic environmental crises that punctuated Triassic. I...

The end-Triassic mass extinction is considered one of the “Big Five” events in Phanerozoic. However, whether terrestrial ecosystem began to deteriorate or even collapse prior Triassic–Jurassic (Tr-J) transition remains controversial. Compared with documented data from western Tethyan region, evidence eastern realm limited. We undertake a fitting analysis sedimentary system, floral community suc...

Abstract The Rhynchonellida is a major group of brachiopods that survived the “big five” mass extinctions and flourished after Permian/Triassic (P/Tr) crisis. However, phylogenetic character evolution in across P/Tr transition poorly understood. In view widespread homoplasy this order, we employ tip-dated Bayesian analysis to reconstruct relationships for late Permian–Triassic rhynchonellides. ...

Abstract This study presents new whole rock major and trace element, Sr-Nd isotopic, petrographic, geochronologic data for seven latest Permian (Changhsingian)–Late Triassic (Carnian) granitoid intrusions of the northwestern northeastern Taimyr Peninsula in Russian High Arctic. U-Pb zircon ages, obtained using secondary ion mass spectrometry (SIMS), sensitive high-resolution microprobe (SHRIMP)...

The protracted recovery of marine ecosystems following the Permian–Triassic mass extinction may have been caused, in part, by episodic environmental and climatic crises during the Early Triassic, among which the Smithian– Spathian boundary (SSB) event is conspicuous. Here, we investigate the SSB event in the Shitouzhai section, Guizhou Province, South China, using a combination of carbonate car...

This work uses high-quality reprocessed 2D data, tied to borehole information, address the development of North Atlantic Jurassic seaways on continental margin West Iberia. The seismic data reveal full thickness Mesozoic syn-rift strata filling deep-offshore basins in this latter region. Tectonic subsidence resulted separation seaway into distal and proximal sectors. As a result, backstripped c...

The new genus Gosavisiphon with the type-species Halimeda paucimedullaris SCHLAGINTWEIT & EBLI, 1998, tentatively referred to the Udoteaceae, is described from the Late Cretaceous (Middle/Late Cenomanian-Santonian) of the Branderfl eck Formation and the Lower Gosau Subgroup of the Northern Calcareous Alps (Austria, Germany). It is a plurimillimetric to pluricentimetric marine, hard-substrate dw...