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A new dissorophoid temnospondyl from the Allegheny Group (late Carboniferous) of Five Points, Mahoning County, Ohio (USA)

Published online by Cambridge University Press:  07 December 2020

Rainer R. Schoch Open the ORCID record for Rainer R. Schoch [Opens in a new window] ,
Amy C. Henrici  and
Robert W. Hook
Rainer R. Schoch
Affiliation:
Staatliches Museum für Naturkunde, Rosenstein 1, D-70191 Stuttgart, Germany
Amy C. Henrici
Affiliation:
Carnegie Museum of Natural History, Section of Vertebrate Paleontology, 4400 Forbes Avenue, Pittsburgh, PA, 15213, USA
Robert W. Hook
Affiliation:
Vertebrate Paleontology Laboratory, Jackson School of Geosciences, The University of Texas at Austin, 10100 Burnet Road, Austin, TX78758, USA
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Abstract

A small temnospondyl skull from the upper Carboniferous Allegheny Group of Five Points, Ohio, is referred to a new dissorophoid, Palodromeus bairdi n. gen n. sp. The complete skull with mandibles is preserved in counterparts. It is characterized by, (1) elongated slit-like choana; (2) postfrontal, postorbital, and supratemporal bearing a distinct ridge; and (3) reduced parietal only two-thirds the length of the frontal. Phylogenetic analysis confirms a dichotomy between amphibamiforms and olsoniforms and places Palodromeus bairdi n. gen. n. sp. at the base of the olsoniforms, revealing an early stage in the evolution of that clade.

UUID: http://zoobank.org/3871e443-7888-4439-a7c1-9463bc4d87ab

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Journal of Paleontology , Volume 95 , Issue 3 , May 2021 , pp. 638 - 651
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Copyright © 2020, The Author(s). Published by Cambridge University Press on behalf of The Paleontological Society

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