Triassic

Just out | Morphology and sediment deformation of downslope Brasilichnium trackways on a dune slipface in the Nugget Sandstone of northeastern Utah, USA @ Palaeontologia Electronica

Just out @ Palaeontologia Electronica Morphology and sediment deformation of downslope Brasilichnium trackways on a dune slipface in the Nugget Sandstone of northeastern Utah, USA Author(s) George F. Engelmann and Daniel J. Chure Abstract: The presumed synapsid trackway known as Brasilichnium is known by numerous trackways from many localities throughout the eolian deposits of the Late Triassic to Early Jurassic erg that covered much of the western United States. These trackways occur

Just out | A new cynodont from the Santa Maria formation, south Brazil, improves Late Triassic probainognathian diversity @ Papers in Palaeontology

Just out @ Papers in Palaeontology A new cynodont from the Santa Maria formation, south Brazil, improves Late Triassic probainognathian diversity Author(s) Agustín G. Martinelli, Estevan Eltink, Átila A. S. Da-Rosa, Max C. Langer Abstract: The fossil record of non-mammaliaform probainognathian cynodonts is outstanding in the Late Triassic rocks of Brazil and Argentina. Approximately 15 genera are known, providing unique insights in the study of the major skeletal transformations prior to

Just out | New Triassic teleosts (Actinopterygii, Teleosteomorpha) from northern Italy and their phylogenetic relationships among the most basal teleosts @ Journal of Vertebrate Paleontology

Just out @ Journal of Vertebrate Paleontology New Triassic teleosts (Actinopterygii, Teleosteomorpha) from northern Italy and their phylogenetic relationships among the most basal teleosts Author(s) Gloria Arratia Abstract: This study provides new evidence of the diversity of Middle–Late Triassic teleosts with the description of new pholidophorids from Italy. The results of the phylogenetic analysis confirm the sister-group relationship [†Aspidorhynchiformes + †Pachycormiformes] as members of Teleosteomorpha and †Prohalecites as the oldest teleosteomorph.

Just out | A three-dimensional geometric morphometric study of the development of sulcus versus shell outline in Permian neospiriferine brachiopods @ Lethaia

Just out @ Lethaia A three-dimensional geometric morphometric study of the development of sulcus versus shell outline in Permian neospiriferine brachiopods Author(s) Sangmin Lee, Jikhan Jung, G. R. Shi Abstract: The morphological variation of the sulcal development and shell outline in large Permian neospiriferine brachiopods including Fasciculatia Waterhouse, 2004 is investigated using geometric morphometrics. The sulcal tongues of spiriferide brachiopods can be, in a qualitative sense, categorized into three types according

Just out | Changes in terrestrial floras at the Triassic-Jurassic Boundary in Europe @ Palaeogeography, Palaeoclimatology, Palaeoecology

Just out @ Palaeogeography, Palaeoclimatology, Palaeoecology Changes in terrestrial floras at the Triassic-Jurassic Boundary in Europe Author(s) Maria Barbacka, Grzegorz Pacyna, , Ádam T. Kocsis, , Agata Jarzynka, Jadwiga Ziaja, , Emese Bodor Abstract: One of the biggest mass extinctions took place at the Triassic-Jurassic Boundary. It affected both marine and terrestrial ecosystems, and caused the disappearance of many animal taxa, mostly marine ones. Its influence on floral changes has been

Just out | Floccular fossa size is not a reliable proxy of ecology and behaviour in vertebrates @ Nature Scientific Reports

Just out @ Nature Scientific Reports Floccular fossa size is not a reliable proxy of ecology and behaviour in vertebrates Author(s) S. Ferreira-Cardoso, R. Araújo, N. E. Martins, G. G. Martins, S. Walsh, R. M. S. Martins, N. Kardjilov, I. Manke, A. Hilger & R. Castanhinha Abstract: The cerebellar floccular and parafloccular lobes are housed in fossae of the periotic region of the skull of different vertebrates. Experimental evidence indicates that

Just out | Pre- versus post-mass extinction divergence of Mesozoic marine reptiles dictated by time-scale dependence of evolutionary rates @ Proceedings of the Royal Society B

Just out @ Proceedings of the Royal Society B Pre- versus post-mass extinction divergence of Mesozoic marine reptiles dictated by time-scale dependence of evolutionary rates Author(s) Ryosuke Motani, Da-yong Jiang, Andrea Tintori, Cheng Ji, Jian-dong Huang Abstract: The fossil record of a major clade often starts after a mass extinction even though evolutionary rates, molecular or morphological, suggest its pre-extinction emergence (e.g. squamates, placentals and teleosts). The discrepancy is larger

Just out | New Permian-Triassic conodont data from Selong (Tibet) and the youngest occurrence of Vjalovognathus @ Journal of Asian Earth Sciences

Just out @ Journal of Asian Earth Sciences New Permian-Triassic conodont data from Selong (Tibet) and the youngest occurrence of Vjalovognathus Author(s) Lina Wang, Paul B. Wignall, Yadong Sun, Chunbo Yan, Zaitian Zhang, Xulong Lai Abstract: The controversial biostratigraphy of the well-known Permo-Triassic (P-T) boundary section at Selong, South Tibet is reinvestigated based on large conodont samples. The conodont data in this study confirm that the upper part of Selong Formation

Just out | Paleozoic echinoderm hangovers: Waking up in the Triassic @ Geology

Just out @ Geology Paleozoic echinoderm hangovers: Waking up in the Triassic Author(s) Ben Thuy, Hans Hagdorn, Andy S. Gale Abstract: Echinoderms are among the marine invertebrates that underwent the most severe losses at the end-Permian extinction. The prevailing paradigm claims an extreme bottleneck with only very few, if not single, holdovers (“hangovers” herein) sparking the post-Paleozoic radiation. Here we identify previously overlooked Triassic echinoids, ophiuroids, and asteroids as unambiguous

Just out | Cyclotosaurus naraserluki, sp. nov., a new Late Triassic cyclotosaurid (Amphibia, Temnospondyli) from the Fleming Fjord Formation of the Jameson Land Basin (East Greenland) @ Journal of Vertebrate Paleontology

Just out @ Journal of Vertebrate Paleontology Cyclotosaurus naraserluki, sp. nov., a new Late Triassic cyclotosaurid (Amphibia, Temnospondyli) from the Fleming Fjord Formation of the Jameson Land Basin (East Greenland) Author(s) Marco Marzola, Octávio Mateus, Neil H. Shubin & Lars B. Clemmensen Abstract: Cyclotosaurus naraserluki, sp. nov., is a new Late Triassic capitosaurid amphibian from lacustrine deposits in the Fleming Fjord Formation of the Jameson Land Basin in Greenland. It is