, Volume 96, Issue 2, pp 233–242 | Cite as

New material of the enigmatic reptile Khurendukhosaurus (Diapsida: Choristodera) from Mongolia

  • Ryoko MatsumotoEmail author
  • Shigeru Suzuki
  • Khisigjav Tsogtbaatar
  • Susan E. Evans
Original Paper


New material of the enigmatic diapsid Khurendukhosaurus is described from the Mongolian type locality, Khuren Dukh, providing additional data on the vertebral column, pelvis, and hind limb. It confirms the choristoderan status of the genus and permits a more detailed phylogenetic analysis that supports a relationship between Khurendukhosaurus and the long-necked Asian Hyphalosauridae. The existence of tall caudal neural spines implies that Khurendukhosaurus was a deep-tailed swimmer. This and the open sacral costocentral sutures suggest a primarily aquatic lifestyle.


Diapsida Choristodera Khurendukhosaurus Cretaceous Mongolia 



RM and SEE thank the Directors of the Hayashibara Museum of Natural Sciences, Okayama, for access to its collections in 2008; Dr T. Tsubamoto for facilitating our work; and Dr P. Skutschas (St Petersburg, Russia) for helpful discussion. This paper constitutes Hayashibara Museum of Natural Sciences–Mongolian Paleontological Center Joint Paleontological Expedition Contribution Number 46.

Supplementary material

114_2008_469_MOESM1_ESM.pdf (51 kb)
ESM Appendix 1 (PDF 50.9 KB)
114_2008_469_MOESM2_ESM.pdf (18 kb)
ESM Appendix 2 (PDF 18.3 KB)
114_2008_469_MOESM3_ESM.pdf (50 kb)
ESM Table 1 (PDF 50.4 KB)


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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Ryoko Matsumoto
    • 1
    Email author
  • Shigeru Suzuki
    • 2
  • Khisigjav Tsogtbaatar
    • 3
  • Susan E. Evans
    • 1
  1. 1.Cell and Developmental BiologyUCL University College LondonLondonUK
  2. 2.Center for Paleobiological ResearchHayashibara Biochemical Laboratories, Inc.OkayamaJapan
  3. 3.Mongolian Paleontological CenterMongolian Academy of SciencesUlaanbaatarMongolia

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