Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Monoplacophora
Ordo: †Cyrtonellida
Familia: †Cyrtolitidae
Genus: † Cyrtodiscus
Species: † C. nitidus – † C. procer – † C. simaki
Name
Cyrtodiscus J. Perner, 1903
Synonymy
Gamadiscus (subjective synonym)
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