A tetrapod swimming traceway from the Triassic of Winterswijk, the Netherlands

Anne S. Schulp*, Remco W. Bleeker, Adam Haarhuis, Edwin Van Spronsen, Melanie A.D. During, Gerard Goris, Pim Kaskes, Yuri Matteman, Wout Winkelhorst, Herman Winkelhorst

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


We describe a tetrapod swimming traceway from the Middle Triassic Vossenveld Formation of the Netherlands. Forty-five individual traces, each consisting of two parallel claw drag marks, were followed over 9 m in a roughly east-west direction. The asymmetry of the traceway geometry indicates the trace maker negotiated a lateral current. The trace maker could not be identified, but the traces described here are markedly different from Dikoposichnus traces attributed to swimming nothosaurs.

Original languageEnglish
Pages (from-to)273-277
Number of pages5
JournalGeologie en Mijnbouw/Netherlands Journal of Geosciences
Issue number3
Publication statusPublished - 1 Sept 2017


  • Anisian
  • swimming traces
  • Triassic


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