Rodzaj Agastrioceras Schmidt, 1938
Gatunek typowy Opis Conch discoidal and pachyconic with moderately wide umbilicus; venter narrowly rounded; ornamentation of inner whorls consists of small umbilical nodes; some species with very fine spiral ornamentation; suture line with moderately wide, Y-shaped ventral lobe and moderately high median saddle; prongs of ventral lobe symmetric. Synonimy Zasięg czasowy Carboniferous, Moscovian (Yeadonian – Langsettian) Literatura Schmidt, H. 1938. Die marinen Fossilien im Oberkarbon Nordwestdeutschlands. In: Kukuk, P. Geologie des niederrheinisch westfälischen Steinkohlengebirges 117–124. Julius Springer Verlag, Berlin. |
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