The Changhsingian (Late Permian) ammonoids from Baghuk Mountain (Central Iran) Author Korn, Dieter 286CA4F3-7EBC-4AEF-A66A-B2508D001367 Museum für Naturkunde, Leibniz Institut for Research on Evolution and Biodiversity, Invalidenstrasse 43, 10115 Berlin, Germany. dieter.korn@mfn.berlin Author Hairapetian, Vachik 1AB10F8F-4576-481B-9270-5DCD25110DBB Department of Geology, Esfahan (Khorasgan) Branch, Islamic Azad University, Esfahan, Iran. vhairap@gmail.com Author Ghaderi, Abbas 925F2B42-7326-4461-B2A6-83CB83ECCC63 Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Azadi Square, 9177948974, Mashhad, Iran. aghaderi@um.ac.ir Author Leda, Lucyna 81481AFA-C8EE-4E90-A954-FD0E7987621E Museum für Naturkunde, Leibniz Institut for Research on Evolution and Biodiversity, Invalidenstrasse 43, 10115 Berlin, Germany. lucyna.skorpion3@wp.pl Author Schobben, Martin 44C2A45A-B16C-434F-8F22-FC9C0FCA2551 Utrecht University, Department of Earth Sciences, Princetonlaan 8 A, 3584 CB Utrecht, The Netherlands. & Department of Geology, Esfahan (Khorasgan) Branch, Islamic Azad University, Esfahan, Iran. schobbenmartin@gmail.com Author Akbari, Amir 3C9DB6F9-2034-418F-876C-49359D07D29F Department of Geology, Esfahan (Khorasgan) Branch, Islamic Azad University, Esfahan, Iran amakbari80@yahoo.com text European Journal of Taxonomy 2021 2021-10-27 776 1 106 journal article 3782 10.5852/ejt.2021.776.1559 453c885c-f427-4a38-ab97-dc14b686e126 2118-9773 5604715 226B6C59-8620-4A29-9BEF-359BE67A1A2C Genus Shevyrevites Teichert & Kummel in Teichert et al. , 1973 Type species Shevyrevites shevyrevi Teichert & Kummel in Teichert et al. , 1973 , by original designation. Diagnosis Representatives of the family Xenodiscidae with a moderately large to large conch; maximum adult diameter between 60 and 80 mm . Subadult stage with a trapezoidal whorl profile, adult stage variable. Subadult stage with small to large conical ventrolateral nodes, adult stage with a weakening sculpture with predominant ribs. Suture line with external lobe that does not reach the depth of the adventive lobe; prongs of the external lobe simple or bifid. Included species Shevyrevites shevyrevi Teichert & Kummel in Teichert et al. , 1973 ; Bernhardites nodosus Shevyrev, 1965 ; Shevyrevites corrugatus Korn & Hairapetian sp. nov. Remarks The species of Shevyrevites show a coarse ornament consisting of lateral ribs and sometimes also coarse conical nodes in the inner whorls, and are hereby clearly separated from the other genera of the family. Regarding the presence of ventrolateral nodes, there are some similarities to the genera of the family Dzhulfitidae , but these differ in the shape of the suture line: while the external lobe is wide in Shevyrevites , it is always narrow in the Dzhulfitidae . Teichert & Kummel (in Teichert et al. 1973 ) caused some nomenclatorial confusion with their opinion on the species of their new genus Shevyrevites . They made clear that “ Celtites radiosus ”, the Triassic type species of Bernhardites Shevyrev, 1965 , differs from the Late Permian forms and that for the latter, a new genus name ( Shevyrevites ) had to be introduced. At the same time, they treated the two species “ Bernhardites radiosus (Frech in Noetling, 1905)” and “ Bernhardites nodosus Shevyrev, 1965 ”, both of which were separated by Shevyrev (1965) , as synonyms; they described these under the new genus and species name Shevyrevites shevyrevi . This procedure is not accepTable because it suppresses the species name Shevyrevites nodosus , which in case of synonymy of the two species has priority over Shevyrevites shevyrevi . However, this problem is regarded here minor, as we accept both species as valid.