Strandoceras Flower 1946

Genus Strandoceras Flower, 1946 Type species Protophragmoceras tyriense Strand, 1934, from Stavnestangen, Ringerike, Norway, Bønsnes Formation, Late Katian; by original designation. Diagnosis Endogastric cyrtocones with compressed conch cross section, ventral side of cross section more narrowly rounded than the dorsal side; mature body chamber less curved than the rest of the conch; peristome with small sinus on concave and wide sinus on convex side of conch; sutures with shallow lateral lobes slightly shifted adapically at the dorsal side; siphuncle near conch margin with broadly expanded segments and endosiphuncular bullettes. (Adopted from Flower 1946: 434.)