Megasphaeroceras Temporal range:
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Family: | Sphaeroceratidae
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Genus: | Megasphaeroceras
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Megasphaeroceras is an ammonite genus included in Sphaeroceratidae, a family of ammonoid[2] cephalopods characterized by their spheroidal shells with markedly eccentric coiling, fine ribbing, and complex sutures, known from the Bajocian.[1]