Parallelodon obsoletiformes Hayasaka 1925

Abstract

Parallelodon obsoletiformes Hayasaka, 1925 Original source Hayasaka (1925): 18, pl. 8 figs 15–16. Type stratum and age “Kuro zone” (i.e., Yabeina globosa zone) of the Akasaka Limestone, Kazanian (Hayami & Kase 1977; Prinoth & Posenato 2023), Guadalupian, Permian. Type locality “ Kinshô-zan, Akasaka-Machi, prov. Mino ”; Kinshozan, Akasaka-cho, Fuwa-gun, Gifu Prefecture, Honshu, Japan. Type material Hayasaka mentioned two specimens, a LV “almost completely freed from the matrix”, on which he based most of the description, and another LV embedded in sediment. He did not indicate a holotype. Hanzawa et al. (1961: 269) listed a specimen stored at Institute of Geology and Paleontology (today Department of Earth Science), Tohoku University, Japan (IGPS no. 22392) incorrectly as the “holotype”. Hayami & Kase (1977) noted this mistake but stated that “their treatment is here regarded as constituting lectotype designation.” However, according to Art. 74.5 a subsequent use of the term “holotype” does not constitute a valid lectotype designation. To serve nomenclatural stability, we formally designate here the same specimen (IGPS no. 22392) as the lectotype. Remarks Placed in Grammatodon (Cosmetodon) by Yancey (1985) and Prinoth & Posenato (2023).

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