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The Middle Triassic Vossenveld Formation in Winterswijk

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The Middle Triassic Vossenveld Formation in Winterswijk NEDERLANDSE GEOLOGISCHE VERENIGING & WERKGROEP MUSCHELKALK WINTERSWIJK GRONDBOOR & HAMER NR. 5/6 - JAARGANG 73, 2019 EDITIE STARINGIA 16 Inhoudsopgave – Table of contents P.143 WEERKOMM’ DE KALKSTEENGROEVE IN WINTERSWIJK ........................................................................................... 2 P.147 THE VOSSENVELD FORMATION AND BIOTIC RECOVERY FROM THE END-PERMIAN EXTINCTION ......................................... 2 P.153 HOE HET BEGON: ONTDEKKING EN EERSTE GEBRUIK VAN DE KALKSTEEN ...................................................................... 5 P.156 ACADEMIC EXCAVATIONS .................................................................................................................................. 6 P.161 LIEFHEBBERS VAN DE STEENGROEVE; 25 JAAR GEZAMENLIJK DOOR DE MUSCHELKALK .................................................... 6 P.165 THE WINTERSWIJK TRIASSIC WINDOW AND ITS SETTING - A HELICOPTER VIEW.............................................................. 7 P.167 STRATIGRAPHY AND GEOCHEMISTRY OF THE VOSSENVELD FORMATION ...................................................................... 7 P.178 HET IS NIET AL GOUD WAT BLINKT .....................................................................................................................11 P.185 NON-ARTHROPOD INVERTEBRATES FROM THE MIDDLE TRIASSIC MUSCHELKALK OF WINTERSWIJK .................................11 P.191 MARINE ARTHROPODS FROM THE MIDDLE TRIASSIC OF WINTERSWIJK .....................................................................14 P.195 THE INSECTS OF THE WINTERSWIJK MUSCHELKALK ...............................................................................................16 P.198 THE FISH FAUNA OF THE WINTERSWIJK VOSSENVELD FORMATION ...........................................................................17 P.208 TANYSTROPHEIDS FROM THE WINTERSWIJK QUARRY – RARE BUT RECURRING ELEMENTS ..............................................18 P.216 WITH PLATES AND SPIKES – THE HEAVILY ARMOURED EUSAUROSPHARGIS AFF. DALSASSOI ............................................20 P.222 THE IMPORTANCE OF WINTERSWIJK FOR UNDERSTANDING PLACODONTIFORM EVOLUTION ...........................................22 P.226 ANAROSAURUS HETERODONTUS - THE LEAST AQUATIC PACHYPLEUROSAUR ...............................................................23 P.234 NOTHOSAUROIDEA FROM THE VOSSENVELD FORMATION AND THEIR RELATIVES .........................................................26 P.245 ANCESTORS TO THE PLESIOSAURS? ON TRIASSIC PISTOSAUROIDEA AND THE POTENTIAL PRESENCE OF CYMATOSAURS IN WINTERSWIJK ....................................................................................................................................................... 29 P.250 LEAVING ONLY TRACE FOSSILS - THE UNKNOWN VISITORS OF WINTERSWIJK ...............................................................31 P.258 THE TAPHONOMY OF THE ANISIAN OF WINTERSWIJK - INSIGHTS INTO A UNIQUE ENVIRONMENT ....................................32 P.266 REMARKABLE EUSAUROPTERYGIAN HUMERI FROM THE VOSSENVELD FORMATION ......................................................33 P.273 AN AFF. EUSAUROSPHARGIS VERTEBRA ASSOCIATED WITH AN ISOLATED DENTARY .......................................................35 P.278 HET BERGEN EN PREPAREREN VAN FOSSIELEN UIT DE GROEVE .................................................................................37 P.288 MUSEUM COLLECTIONS AND EXHIBITIONS ...........................................................................................................37 P.294 STATE-OF-THE-ART: VIRTUAL PALAEONTOLOGY OF VOSSENVELD FOSSILS ..................................................................37 1 NEDERLANDSE GEOLOGISCHE VERENIGING (NGV) & WERKGROEP MUSCHELKALK WINTERSWIJK (WMW) GRONDBOOR & HAMER NR. 5/6 - JAARGANG 73, 2019 VOLLEDIGE LITERATUURLIJST - Editie STARINGIA 16 - FULL REFERENCES P.143 WEERKOMM’ DE KALKSTEENGROEVE IN WINTERSWIJK Sofie Aalders & Henk Duyverman†1 (1Hoofdredacteur Nederlandse Geologische Vereniging - Grondboor & Hamer) - No declared references / geen referenties opgegeven. P.147 THE VOSSENVELD FORMATION AND BIOTIC RECOVERY FROM THE END-PERMIAN EXTINCTION Jun Liu1,2, P. Martin Sander1 (1Institute of Geosciences, University of Bonn, Bonn 53009, Germany; 2School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; Email: [email protected]) - Albers, P.C.H., 2005. A new specimen of Nothosaurus marchicus with features that relate the taxon to Nothosaurus winterswijkensis. PalArch's journal of vertebrate palaeontology, v.3, no.1, pp.1-7. - Albers, P.C.H., 2011. New Nothosaurus skulls from the Lower Muschelkalk of the western Lower Saxony Basin (Winterswijk, the Netherlands) shed new light on the status of Nothosaurus winterswijkensis. Netherlands Journal of Geosciences-Geologie en Mijnbouw, v.90, no.1, pp.15-21. https://doi.org/10.1017/s0016774600000639 - Benson, R.B.J., & R.J. Butler, 2011. Uncovering the diversification history of marine tetrapods: ecology influences the effect of geological sampling biases. Geological Society, London, Special Publications, v.358, no.1, pp.191-208. https://doi.org/10.1144/sp358.13 - Benson, R.B.J., R.J. Butler, J. Lindgren, & A.S. Smith, 2010. Mesozoic marine tetrapod diversity: mass extinctions and temporal heterogeneity in geological megabiases affecting vertebrates. Proceedings of the Royal Society B Biological Sciences, v.277, no.1683, pp.829-834. - Benton, M.J., 2015. Vertebrate Palaeontology, John Wiley & Sons, 480 p. - Benton, M.J., Q. Zhang, S. Hu, Z.-Q Chen, W. Wen, J. Liu, J.-Y Huang, C.-Y. Zhou, T. Xie, J. Tong & B. Choo, 2013. Exceptional vertebrate biotas from the Triassic of China, and the expansion of marine ecosystems after the Permo-Triassic mass extinction. Earth-Science Reviews, v.125, pp.199-243. https://doi.org/10.1016/j.earscirev.2013.05.014 - Brayard, A., G. Escarguel, H. Bucher, C. Monnet, T. Brühwiler, N. Goudemand, T Galfetti, & J. Guex, 2009, Good genes and good luck: ammonoid diversity and the end-Permian mass extinction. Science, v.325, no.5944, pp.1118-1121. https://doi.org/10.1126/science.1174638 - Casini, M., T. Blenckner, C. Möllmann, A. Gårdmark, M. Lindegren, M. Llope, G. Kornilovs, M. Plikshs, & N.C. Stenseth, 2012. Predator transitory spillover induces trophic cascades in ecological sinks. Proceedings of the National Academy of Sciences, v.109, no.21, pp.8185-8189. https://doi.org/10.1073/pnas.1113286109 - Chen, Z.-Q., & M.J. Benton, 2012. The timing and pattern of biotic recovery following the end- Permian mass extinction. Nature Geoscience, v.5, no.6, pp.375-383. https://doi.org/10.1038/ngeo1475 - Cheng, L., R. Motani, D.-Y. Jiang, C.-B. Yan, A. Tintori, & O. Rieppel, 2019. Early Triassic marine reptile representing the oldest record of unusually small eyes in reptiles indicating non-visual prey detection. Scientific Reports, v.9, no.1, p. 152. https://doi.org/10.1038/s41598-018-37754-6 - Dülfer, O., & N. Klein, 2006. Studentische Lehrgrabung im Winterswijker Muschelkalk. Der Präparator, v.52, pp.90-96. 2 - Fröbisch, N.B., J. Fröbisch, P.M. Sander, L. Schmitz, & O. Rieppel, 2013. Macropredatory ichthyosaur from the Middle Triassic and the origin of modern trophic networks. Proceedings of the National Academy of Sciences of the United States of America, v.110, no.4, pp.1393-1397. https://doi.org/10.1073/pnas.1216750110 - Heijne, J., N. Klein, & P.M. Sander, 2019. The uniquely diverse taphonomy of the marine reptile skeletons (Sauropterygia) from the Lower Muschelkalk (Anisian) of Winterswijk, The Netherlands. Paläontologische Zeitschrift, v.93, no.1, pp.69-92. https://doi.org/10.1007/s12542-018-0438-0 - Hurum, J.H., V.S. Engelschiøn, I. Økland, J. Bratvold, C.P. Ekeheien, A.J. Roberts, L.L. Delsett, B.B. Hansen, A. Mørk, H.A. Nakrem, P.S. Druckenmiller, & Ø. Hammer, 2018. The history of exploration and stratigraphy of the Early to Middle Triassic vertebrate-bearing strata of Svalbard (Sassendalen Group, Spitsbergen). Norwegian Journal of Geology/Norsk Geologisk Forening, v.98, no.2, pp.165- 174. https://doi.org/10.17850/njg98-2-04 - Kelley, N.P., R. Motani, P. Embree, & M.J. Orchard, 2016. A new Lower Triassic ichthyopterygian assemblage from Fossil Hill, Nevada. PeerJ, v.4, p.e1626. https://doi.org/10.7717/peerj.1626 - Kelley, N.P., R. Motani, D.-Y. Jiang, O. Rieppe,l & L. Schmitz, 2014. Selective extinction of Triassic marine reptiles during long-term sea-level changes illuminated by seawater strontium isotopes. Palaeogeography, Palaeoclimatology, Palaeoecology, v.400, pp.9-16. https://doi.org/10.1016/j.palaeo.2012.07.026 - Klein, N., 2009. Skull morphology of Anarosaurus heterodontus (Reptilia: Sauropterygia: Pachypleurosauria) from the Lower Muschelkalk of the Germanic Basin (Winterswijk, the Netherlands). Journal of Vertebrate Paleontology, v.29, no.3, pp.665-676. https://doi.org/10.1671/039.029.0327 - Klein, N., 2012. Postcranial morphology and growth of the pachypleurosaur Anarosaurus heterodontus (Sauropterygia) from the Lower Muschelkalk of Winterswijk, The Netherlands. Paläontologische Zeitschrift, v.86, no.4, pp.389-408. https://doi.org/10.1007/s12542-012-0137-1 - Klein, N., & P.C.H. Albers, 2009. A new species of the sauropsid reptile Nothosaurus from the Lower Muschelkalk of the western Germanic Basin, Winterswijk, The Netherlands. Acta Palaeontologica Polonica, v.54, no.4, pp.589-598. https://doi.org/10.4202/app.2008.0083 - Klein, N., & T.M. Scheyer, 2014. A new placodont sauropterygian from the Middle Triassic
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