The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden Author Kröger, Björn text European Journal of Taxonomy 2013 2013-03-27 41 1 110 journal article http://dx.doi.org/10.5852/ejt.2013.41 386010a0-6da4-4fa3-9d1a-4b3b5427cac5 2118-9773 3814221 A2F1B9ED-870A-466E-B35E-BD5DA782476E Genus Beloitoceras Foerste, 1924 Type species Oncoceras pandion Hall, 1861 , Black River Formation, Beloit, Wisconsin , USA ; by original designation. Diagnosis Strongly curved, relatively slender brevicones with ovate, compressed cross section. Conch smooth or with fine transverse ornament. Maximum conch diameter situated within adapical half to third of body chamber. Antisiphuncular outline of conch concave over entire length in longitudinal section, prosiphuncular outline broadly convex. Five to eight chambers per distance similar to corresponding conch cross section. Body chamber short with well developed hyponomic sinus at convex side. Siphuncle slender, situated close to convex margin of conch curvature, with subtubular segments. Septal necks short suborthochoanitic to cyrtochoanitic. Connecting rings thin. (Compiled from Sweet 1964b and Frey 1995 .)