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Article: A new platychelyid turtle (Pan‐Pleurodira) from the Late Jurassic (Kimmeridgian) of Oaxaca, Mexico

Papers in Palaeontology - Volume 3 Part 2 - Cover
Publication: Palaeontology
Volume: 3
Part: 2
Publication Date: May 2017
Page(s): 161 174
Author(s): Oliver A. López‐Conde, Juliana Sterli, Jesus Alvarado‐Ortega, and María L. Chavarría‐Arellano
DOI: 10.1002/spp2.1069
Addition Information

How to Cite

LóPEZ‐CONDE, O.A., STERLI, J., ALVARADO‐ORTEGA, J., CHAVARRíA‐ARELLANO, M.L. 2017. A new platychelyid turtle (Pan‐Pleurodira) from the Late Jurassic (Kimmeridgian) of Oaxaca, Mexico. Papers in Palaeontology, 3, 2, 161-174. DOI: 10.1002/spp2.1069

Author Information

  • Oliver A. López‐Conde - Posgrado en Ciencias Biológicas Instituto de Geología Universidad Nacional Autónoma de México Delegación Coyoacán Distrito Federal México (Email: vertebrate_palaeontology@comunidad.unam.mx)
  • Juliana Sterli - CONICET‐Museo Paleontológico Egidio Feruglio Trelew Chubut Argentina (Email: jsterli@mef.org.ar)
  • Jesus Alvarado‐Ortega - Universidad Nacional Autónoma de México Delegación Coyoacán Distrito Federal México (Email: alvarado@geologia.unam.mx)
  • María L. Chavarría‐Arellano - Posgrado en Ciencias Biológicas Instituto de Geología Universidad Nacional Autónoma de México Delegación Coyoacán Distrito Federal México (Email: mariachavarra@outlook.com)

Publication History

  • Issue published online: 08 May 2017
  • Manuscript Accepted: 14 October 2016
  • Manuscript Received: 11 July 2016

Funded By

PAPIIT. Grant Numbers: IN106011, IN 207314
CONACyT. Grant Number: 545282
Willi Hennig Society

Online Version Hosted By

Wiley Online Library
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Abstract

Until recently, the record of Mesozoic turtles in Mexico has been restricted to the Cretaceous. New discoveries in the Sabinal Formation (Tlaxiaco, Oaxaca) have extended the record into the Kimmeridgian (Late Jurassic). The Sabinal Formation is part of the Tlaxiaco Basin, which was a depocenter of continental and marine sediments dominated by transgressive‐regressive marine conditions during the Jurassic–Cretaceous. The new turtle described here consists of an almost complete carapace associated with a plastron. Based on the unique combination of characters, this turtle is identified as a new species of Platychelyidae here named Notoemys tlaxiacoensis. Platychelyid characters in this specimen include the presence of the sulcus between vertebral 3 and 4 located on neural 6, the presence of a central plastral fontanelle, and a pair of reduced mesoplastra. The occurrence of Kimmeridgian platychelyids in Mexico confirms that the Hispanic Corridor acted as a connection between Tethyan and Palaeopacific faunas.

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