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

Rainer R. Schoch; Amy C. Henrici; Robert W. Hook

doi:10.1017/jpa.2020.101

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Rainer R. Schochhttps://orcid.org/0000-0002-0312-2877,¹ Amy C. Henrici,² Robert W. Hook³

¹Staatliches Museum für Naturkunde, Rosenstein 1, D-70191 Stuttgart, Germany
²Carnegie Museum of Natural History, Section of Vertebrate Paleontology, 4400 Forbes Avenue, Pittsburgh, PA, 15213, USA
³Vertebrate Paleontology Laboratory, Jackson School of Geosciences, The University of Texas at Austin, 10100 Burnet Road, Austin, TX 78758, USA

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.

Citation Download Citation

Rainer R. Schoch, Amy C. Henrici, and Robert W. Hook "A new dissorophoid temnospondyl from the Allegheny Group (late Carboniferous) of Five Points, Mahoning County, Ohio (USA)," Journal of Paleontology 95(3), 638-651, (26 April 2021). https://doi.org/10.1017/jpa.2020.101

Accepted: 23 October 2020; Published: 26 April 2021

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