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1 April 2015 A Review of the Fossil Record of Turtles of the Clades Platychelyidae and Dortokidae
Edwin Cadena, Walter G. Joyce
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Abstract

The fossil record of platychelyid turtles expands from the Late Jurassic (Oxfordian) of Cuba to the Early Cretaceous (Valanginian) of Colombia. Platychelyids were adapted to freshwater to coastal environments. Current phylogenies confidently suggest that platychelyids are situated along the stem lineage of crown Pleurodira. A taxonomic review of the group concludes that of six named “platychelyid” taxa, four are valid and two are nomina nuda. Dortokids are a poorly understood group of freshwater aquatic turtles that are restricted to the Early Cretaceous (Barremian) to Eocene (Lutetian) of Europe. The phylogenetic position of the group is still under debate, but there is some evidence that these turtles are positioned along the stem lineage of crown Pleurodira as well. A taxonomic review of the group concludes that of four named dortokid taxa, two are valid, one is a nomen invalidum and one a nomen nudum.

©2015 Peabody Museum of Natural History Yale University. All rights reserved.
Edwin Cadena and Walter G. Joyce "A Review of the Fossil Record of Turtles of the Clades Platychelyidae and Dortokidae," Bulletin of the Peabody Museum of Natural History 56(1), 3-20, (1 April 2015). https://doi.org/10.3374/014.056.0101
Received: 24 July 2014; Accepted: 1 October 2014; Published: 1 April 2015
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