Ptychopteria obsoleta Simpson

Abstract

Ptychopteria obsoleta Simpson in Lesley, 1889 Original source Lesley (1889): 448, fig. 15. Type stratum and age “Chemung Group”, Brallier Formation, Upper Devonian (Berg et al. 1993). Type locality “ Hill north of Warren, Warren county, Pennsylvania ”, United States of America. Type material Lesley (1889: 839) mentioned that P. obsoleta based on Randall’s specimen no. 9622 (wrongly labelled as Yoldia). It is stored in the collection of the Geological Survey of Pennsylvania. Remarks The species was first introduced in Lesley’s (1889) dictionary of the fossils from Pennsylvania. Lesley referred to descriptions by G.B. Simpson in the Transactions of the American Philosophical Society, which were presented at a society’s meeting in 1888 but not published before 1890. However, Lesley (1889: viii) stated that the description and illustration were prepared by Simpson, making him the author of the species. Chadwick (1935: 330) classified the species in the genus Prorhynchus. Amler & Friedel (2025) suggested an affiliation to Parallelodon.

Authors 3

1. Julia C. Friedel

   University of Cologne

   Affiliation as printed

   Institute of Geology and Mineralogy, University of Cologne, Zülpicher Str. 49 a, 50674 Cologne, Germany

2. Thomas A. Neubauer Aachen Department of Earth and Environmental Sciences

   Ludwig-Maximilians-Universität München · Bavarian Natural History Collections · Naturalis Biodiversity Center · Bayerische Staatssammlung für Paläontologie und Geologie

   Affiliation as printed

   SNSB - Bavarian State Collection for Palaeontology and Geology, Richard-Wagner-Strasse 10, 80333 Munich, Germany. & Department of Earth and Environmental Sciences, Palaeontology & Geobiology, Ludwig-Maximilians-Universität München, Richard-Wagner-Str. 10, 80333 Munich, Germany. & Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, The Netherlands

3. Michael R. W. Amler

   University of Cologne · Philipps University of Marburg

   Affiliation as printed

   Institute of Geology and Mineralogy, University of Cologne, Zülpicher Str. 49 a, 50674 Cologne, Germany. & Department of Geography, Philipps-Universität Marburg, Deutschhausstr. 10, 35032 Marburg, Germany