Abstract In terrestrial settings, the Permo-Triassic mass extinction is commonly linked to major changes in sedimentological and climatic conditions that include a switch from meandering braided fluvial systems increased aridity. We examined predominantly strata of North China reveal that, on contrary, there was little substantial change during extinction. The crisis level occurs upper Sunjiago...

Manuscript 2014; elect Premise of research. Few reproductive organs unequivocally attributable to the important but enigmatic Mesozoic seed plant order Bennettitales have been described from the Triassic of all of North America outside of Greenland. Here, the first ovulate reproductive organs (gynoecia) of the group from the Upper Triassic of eastern North America are described and assigned to ...

Citation: Jaquier VP, Fraser NC, Furrer H and Scheyer TM (2017) Osteology of a New Specimen of Macrocnemus aff. M. fuyuanensis (Archosauromorpha, Protorosauria) from the Middle Triassic of Europe: Potential Implications for Species Recognition and Paleogeography of Tanystropheid Protorosaurs. Front. Earth Sci. 5:91. doi: 10.3389/feart.2017.00091 Osteology of a New Specimen of Macrocnemus aff. M...

Cycle stratigraphic and magnetostratigraphic analyses of a -5000-m-thick composite section obtained by scientific oring in the Newark rift basin of eastern North America provide a high-resolution astronomically calibrated geomagnetic polarity timescale (GPTS) spanning over 30 m.y. of the Late Triassic and earliest Jurassic. Only normal polarity is found in -1000 m of interbedded volcanics and c...

New evidence is presented on the Triassic–Jurassic boundary in northern Lusitanian Basin, Portugal, based miospore assemblages from a composite Upper Triassic to Lower Jurassic succession of Silves Group. The latter comprises, base top, Conraria, Penela, Castelo Viegas and Pereiros formations. Three informal palynological zones have been documented compared with coeval palynozones West South Eu...

The oldest theropod dinosaurs are known from the Carnian of Argentina and Brazil. However, the evolutionary diversification of this group after its initial radiation but prior to the Triassic-Jurassic boundary is still poorly understood because of a sparse fossil record near that boundary. Here, we report on a new basal theropod, Daemonosaurus chauliodus gen. et sp. nov., from the latest Triass...

The rhynchosaurian archosauromorphs are an important and diverse group of fossil tetrapods that first appeared during the Early Triassic and probably became extinct during the early Late Triassic (early Norian). Here, the early evolution of rhynchosaurs during the Early and early Middle Triassic (Induan-Anisian: 252.2-242 Mya) is reviewed based on new anatomical observations and their implicati...

Two new mayfly genera and species from the Triassic deposits of the Pałęgi area (southeast Poland) are described. This is the first description of aquatic insects from the Pałęgi locality. Triassolitophlebia palegica gen. et sp. nov. (Litophlebiidae) is established on the basis of an isolated forewing. This is the first finding of this family in the Northern Hemisphere, known previously only fr...

This field guide is intended to familiarize participants of IGCP 458 with the aspects of the Newark and Hartford rift basins relevant to the non-marine Triassic-Jurassic boundary and its larger context. We will visit 27 stops that illustrate these the basins' range of sedimentary and igneous environments and paleobiological assemblages, focusing on their significance to the understanding of glo...

Abstract The Taho Formation in western Shikoku Island, Japan, consists of Triassic carbonates that formed on a seamount the Panthalassic Ocean. In order to investigate stratigraphy and paleoceanography this carbonate succession, we analyzed biostratigraphy chemostratigraphy 17.6 m‐thick section upper at stratotype area Tahokamigumi, Seiyo City. This comprises bioclastic limestone containing biv...