Paläontologische Zeitschrift

, Volume 88, Issue 1, pp 55–71 | Cite as

Postcranial morphology of a basal Pistosauroidea (Sauropterygia) from the Lower Muschelkalk of Winterswijk, The Netherlands

  • P. Martin Sander
  • Nicole Klein
  • Paul C. H. Albers
  • Constanze Bickelmann
  • Herman Winkelhorst
Research Paper

Abstract

Two partial postcranial skeletons from the Lower Muschelkalk (early Anisian) of Winterswijk, The Netherlands, are described in detail. The specimens were assigned to basal Pistosauroidea, presumably to cf. Cymatosaurus or a closely related taxon. Cymatosaurus is currently the earliest member of the Pistosauroidea and is only known from skull material. Taxonomical assignment is based on humerus morphology and histology, and on morphological differences from other Sauropterygia (Nothosauria and Pachypleurosauria).

Keywords

Triassic Sauropterygia Cymatosaurus Early Anisian Postcranial skeleton 

Institutional Abbrevations

NMNHL

National Museum of Natural History (NCB Naturalis), Leiden, The Netherlands

Kurzfassung

Zwei postcraniale Skelettreste aus dem Unteren Muschelkalk (frühes Anis) von Winterswijk (Niederlande) werden im Detail beschrieben. Die Stücke werden einem basalen Pistosauroidea, möglicherweise cf. Cymatosaurus oder einem nah verwandten Taxon, zugeordnet. Cymatosaurus ist der früheste Vertreter der Pistosauroidea und bislang nur von isolierten Schädelfunden bekannt. Die taxonomische Zuordnung basiert vor allem auf der Morphologie des Humerus und dessen knochenhistologischen Merkmalen, sowie auf morphologischen Unterschieden im direkten Vergleich mit anderen Sauropterygiern (Nothosauria und Pachypleurosauria).

Schlüsselwörter

Triassische Sauropterygia Cymatosaurus Frühes Anis Morphologie Postkranialskelett 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • P. Martin Sander
    • 1
  • Nicole Klein
    • 1
  • Paul C. H. Albers
    • 2
  • Constanze Bickelmann
    • 3
  • Herman Winkelhorst
    • 4
  1. 1.Steinmann Institute, PaleontologyUniversity of BonnBonnGermany
  2. 2.Naturalis, Nationaal Natuurhistorisch MuseumLeidenThe Netherlands
  3. 3.Museum für NaturkundeLeibniz-Institut für Evolutions- und Biodiversitätsforschung an der Humboldt-Universität zu BerlinBerlinGermany
  4. 4.AaltenThe Netherlands

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