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Buxierophus pouilloni n. gen. n. sp., a new dissorophid temnospondyl from the Lower Permian of France (Allier)

Published online by Cambridge University Press:  21 July 2025

Ralf Werneburg Open the ORCID record for Ralf Werneburg [Opens in a new window] ,
Antoine Logghe  and
J.-Sébastien Steyer
Ralf Werneburg*
Affiliation:
NaturHistorisches Museum Schloss Bertholdsburg Schleusingen, Burgstraße 6, D-98553 Schleusingen, Germany
Antoine Logghe
Affiliation:
Museum für Naturkunde Berlin, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Invalidenstraße 43, 10115 Berlin, Germany Centre de Recherches en Paléontologie de Paris, UMR 7207 CNRS-MNHN-SU, 8 rue Buffon, CP38, https://ror.org/03wkt5x30 Muséum national d’Histoire naturelle , 75005 Paris
J.-Sébastien Steyer
Affiliation:
Centre de Recherches en Paléontologie de Paris, UMR 7207 CNRS-MNHN-SU, 8 rue Buffon, CP38, https://ror.org/03wkt5x30 Muséum national d’Histoire naturelle , 75005 Paris
*
Corresponding author: Ralf Werneburg; Email: werneburg@museum-schleusingen.de
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Abstract

A new large dissorophid temnospondyl, Buxierophus pouilloni n. gen. n. sp., is described on the basis of a well-preserved adult skeleton found in the Lower Permian bituminous claystone of Buxières-les-Mines, a fossiliferous locality of the Bourbon-l’Archambault Basin (Allier, France). This new taxon, with a skull length of about 12 cm, is characterized by a unique combination of characters: dorsal midline series of osteoderms composed of two series of thin and unornamented osteoderms, some bearing conspicuous peaks dorsally; internal osteoderms with bi- or multi-lobed dorsal articulation surfaces; neural arches of the same length to that of the osteoderm. A phylogenetic analysis places Buxierophus pouilloni n. gen. n. sp. at the base of the Dissorophidae. This new dissorophid had a semi-aquatic lifestyle. It’s completely ossified ceratobranchial skeleton bears ceratobranchials with grooves as clear indication for its fish-like internal gills in adult stage. It represents the only Lower Permian dissorophid from Europe. Buxierophus n. gen. is part of a rich Permian fauna of the Buxières-les-Mines locality, which is considered as a relatively deep and large paleolake deposit.

UUID: http://zoobank.org/pub/4bc42820-21f6-4674-88ff-eed8597733c3

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Journal of Paleontology , First View , pp. 1 - 21
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© The Author(s), 2025. Published by Cambridge University Press on behalf of Paleontological Society

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Footnotes

Handling Editor: Hans-Dieter Sues

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