Parapuzosia

Parapuzosia is a genus of desmoceratid ammonites from the Cenomanian to the Campanian of Africa, Europe, and North America.[2] They are typically very large ammonites, reaching diameters of 60 cm (2.0 ft) or more, with the largest species measuring upwards of more than 3 m (9.8 ft).[3] It possesses a moderately involute shell with flat or slightly rounded sides. Distinct primary and secondary ribbing can be observed in the inner whorls.[4]