Claim: Sphaeorthoceratidae (Ristedt, 1968) is an extinct family of mollusk, orthocone cephalopods from the kingdom Animalia that lived in the Paleozoic Era
Evidence: Sphaeorthoceratidae is an extinct family of orthocone cephalopods that lived in the Paleozoic Era. Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda. The members are known as molluscs or mollusks (/ˈmɒləsk/). Kingdom: Animalia Phylum: Mollusca