Rodzina Sporadoceratidae
| Opis Diagnosis. — Suture with additional ventral lobes developing in the middle of ventrolateral saddle; convex profile of the conch aperture; relatively low whorl expansion rate. Synonimy Zasięg czasowy Literatura | 
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| Opis Diagnosis. — Suture with additional ventral lobes developing in the middle of ventrolateral saddle; convex profile of the conch aperture; relatively low whorl expansion rate. Synonimy Zasięg czasowy Literatura | 
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