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 Stoyanowites Korn in Ghaderi et al. , 2014 Type species Paratirolites dieneri Stoyanow, 1910 , by original designation Included species Stoyanowites aspinosus Korn & Ghaderi in Korn et al. , 2016 ; Paratirolites dieneri Stoyanow, 1910 ; Stoyanowites parallelus Korn & Hairapetian sp. nov. Diagnosis Genus of the family Dzhulfitidae with moderately large conch; maximum adult diameters are between 80 and 95 mm . Subadult and adult stages with rectangular and compressed whorl profile. Subadult stage with weak to moderately strong lateral ribs; adult stage with weak ornament. Suture line with an external lobe that is much shorter than the adventive lobe. Remarks Stoyanowites is separated from most of the other genera of the family Dzhulfitidae by the short external lobe, which does not reach the depth of the adventive and lateral lobes. Only Dzhulfites is similar in this respect, but this genus is characterised by coarse ventrolateral nodes absent in Stoyanowites .