Ammonoids of the Middle Devonian family Maenioceratidae in the Anti-Atlas of Morocco Author Bockwinkel, Jürgen F7FE7EEA-B678-4FEE-879C-8C429F66BF3A Dechant-Fein-Strasse 22, 51375 Leverkusen, Germany. j.bockwinkel@t-online.de Author Korn, Dieter 286CA4F3-7EBC-4AEF-A66A-B2508D001367 Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Invalidenstrasse 43, 10115 Berlin, Germany. dieter.korn@mfn.berlin text European Journal of Taxonomy 2024 2024-01-30 921 1 1 35 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2413/10641 journal article 10.5852/ejt.2024.921.2413 2118-9773 10590243 80B3C408-DD2C-4373-96AE-15F067D723F8 Genus Trimaenioceras gen. nov. urn:lsid:zoobank.org:act: 943E3B40-EF29-4FAF-AD9C-F231591517B8 Type species Trimaenioceras klugi gen. et sp. nov. Diagnosis Genus of the family Maenioceratidae with or without ventrolateral grooves; shell without constrictions or internal thickenings. External lobe very wide or extremely wide; E 2 lobe deep, cuneiform; ventrolateral saddle symmetrically rounded; lateral lobe V-shaped, angular. Etymology Named after the trident shape of the external lobe and the close relationship to Maenioceras . Included species Anti-Atlas (this paper): Trimaenioceras klugi gen. et sp. nov. ; Trimaenioceras eculeus gen. et sp. nov. ; Trimaenioceras fuscina gen. et sp. nov. ; Trimaenioceras paucum gen. et sp. nov.