caa a22 4500 445839481 CHVBK 20181103083412.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00015-011-0076-y doi (NATIONALLICENCE)springer-10.1007/s00015-011-0076-y Survival of the thinnest: rediscovery of Bauer's (1898) ichthyosaur tooth sections from Upper Jurassic lithographic limestone quarries, south Germany [Elektronische Daten] [Torsten Scheyer, Markus Moser] The re-discovery of nine petrographic slides from the late 19th century at the palaeontological collections of the University of Zurich, showing thin-sectioned ichthyosaur teeth, revealed these slides be the only preserved remains of the historical collection of Upper Jurassic ichthyosaurs from the Bavarian State Collection for Palaeontology and Geology; fossil material which, up to now, was thought to have been completely destroyed during World War II. Here the history of these slides, from their origin in Munich as part of the doctoral thesis of Franz Bauer (1898) to their rediscovery in Zurich in 2010 is presented. Furthermore, a complete overview of all slides is given to elucidate their scientific value with the background of up-to-date knowledge of ichthyosaur dentition and tooth histology, including aspects of tissue and growth mark identification. As such, the sectioned teeth show an exposed layer of acellular cementum at the tooth neck, and sets of short and long period growth lines in the orthodentine. The slides of one tooth are part of the original syntype material of Aegirosaurus leptospondylus (Wagner). They reveal an oval rather than a rectangular shape of the root, as well as the presence of peculiar vascular canals, interpreted as secondary osteodentine deposition, in the peri-pulpal orthodentine. Swiss Geological Society, 2011 History of science nationallicence Ichthyopterygia nationallicence Ichthyosaurus trigonus var. posthumus nationallicence Aegirosaurus leptospondylus nationallicence Nannopterygius nationallicence Orthodentine nationallicence Growth increments nationallicence BSPG : Bavarian State Collection for Palaeontology and Geology, Munich=Bayerische Staatssammlung für Paläontologie und Geologie, München, Formerly Bayerische Paläontologische Staatssammlung nationallicence PIMUZ : Paläontologisches Institut und Museum, University of Zurich, Switzerland nationallicence Scheyer Torsten Paläontologisches Institut und Museum der Universität Zürich, Karl Schmid-Strasse 4, 8006, Zurich, Switzerland aut Moser Markus Bayerische Staatssammlung für Paläontologie und Geologie, Richard-Wagner-Straße 10, 80333, Munich, Germany aut Swiss Journal of Geosciences SP Birkhäuser Verlag Basel 104(2011-12-01), 147-157 1661-8726 104<147 2011 104 15 https://doi.org/10.1007/s00015-011-0076-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00015-011-0076-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Scheyer Torsten Paläontologisches Institut und Museum der Universität Zürich, Karl Schmid-Strasse 4, 8006, Zurich, Switzerland aut NATIONALLICENCE 700 1- Moser Markus Bayerische Staatssammlung für Paläontologie und Geologie, Richard-Wagner-Straße 10, 80333, Munich, Germany aut NATIONALLICENCE 773 0- Swiss Journal of Geosciences SP Birkhäuser Verlag Basel 104(2011-12-01), 147-157 1661-8726 104<147 2011 104 15 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 197140041 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer