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: † Cyrtonellopsis
Species: † C. huzzahensis
Name
Cyrtonellopsis Yochelson, 1958
References
Some Lower Ordovician monoplacophoran mollusks from Missouri. Journal of the Washington Academy of Sciences, 1958, 48(1), 8-14.
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