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Fossil Record A palaeontological open-access journal of the Museum für Naturkunde
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Volume 21, issue 1
Foss. Rec., 21, 79-91, 2018
https://doi.org/10.5194/fr-21-79-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Foss. Rec., 21, 79-91, 2018
https://doi.org/10.5194/fr-21-79-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 22 Mar 2018

Research article | 22 Mar 2018

Postcrania of large dissorophid temnospondyls from Richards Spur, Oklahoma

Bryan M. Gee and Robert R. Reisz Bryan M. Gee and Robert R. Reisz
  • Department of Biology, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada

Abstract. The early Permian karst system near Richards Spur, Oklahoma preserves a diverse assemblage of terrestrial dissorophoid temnospondyls. Here we report the presence of a large-bodied dissorophine dissorophid that is represented by an articulated anterior trunk region, including a partial pectoral girdle, a ribcage characterized by extremely developed uncinate processes, and a rare, completely articulated pes. This represents the first documentation of the clade at the locality. Previously, dissorophids were represented only by the eucacopine Cacops. A complete pelvic girdle with hindlimbs is also referred to Cacops and represents the first material of the posterior trunk region to be described from the genus at Richards Spur. These specimens expand the taxonomic diversity known from the site and provide significant, well-preserved postcranial material that improves the characterization of dissorophid postcranial anatomy.

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This paper presents a description of an extremely well-preserved and articulated skeleton of a temnospondyl amphibian from the early Permian of Oklahoma. Postcranial material is not often well-preserved or well-described in the literature for this group, known as dissorophids, and acquiring new data on this region of the skeleton is important for understanding the evolution of the group. It also represents the first documentation at this site of a genus that was otherwise known only from Texas.
This paper presents a description of an extremely well-preserved and articulated skeleton of a...
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