The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea) 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 Author Bockwinkel, Jürgen F7FE7EEA-B678-4FEE-879C-8C429F66BF3A Dechant-Fein-Strasse 22, 51375 Leverkusen, Germany. jbockwinkel@t-online.de text European Journal of Taxonomy 2021 2021-09-23 771 1 79 http://dx.doi.org/10.5852/ejt.2021.771.1503 journal article 4091 10.5852/ejt.2021.771.1503 d4ff05b4-fdac-44e8-8c2e-0733a93169a0 2118-9773 5536097 9FAB6919-E4AC-44A6-89AB-2E236F55FDB5 Genus Stenopharciceras Montesinos & Henn, 1986 Type species Pharciceras tridens var. kseirense Termier & Termier, 1950 (original designation). Diagnosis Synpharciceratinae with thickly discoidal to thinly pachyconic, subevolute to evolute juvenile stage, whorl profile depressed. Adult stage subinvolute to involute by closure of the umbilicus by shell flares; whorl profile compressed, venter rounded. Adult stage without ventrolateral grooves. Suture line with wide external lobe, short bell- or funnel-shaped E 1 lobe, high median saddle, deep lanceolate E 2 lobe, smaller pointed lateral lobe, three or four outer and up to five inner umbilical lobes. Suture line formula (E 2 E 1 E 2 ) L U 2 U 4 U 6 : U 5 U 3 U 1 I to (E 2 E 1 E 2 ) L U 2 U 4 U 6 U 8: U 9 U 7 U 5 U 3 U 1 I. Included species Pharciceras tridens var. kseirensis Termier & Termier, 1950 , Anti-Atlas; Stenopharciceras progressum Bockwinkel, Becker & Ebbighausen, 2013 , Anti-Atlas; Stenopharciceras protectum Bockwinkel, Becker & Ebbighausen, 2009 , Anti-Atlas; Stenopharciceras lotzi sp. nov. , Rhenish Mountains.