Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Cephalopoda
Subclassis: † Ammonoidea
Ordo: †Goniatitida
Subordo: Tornoceratatina
Superfamilia: Prionocerataceae
Familia: † Prionoceratidae
Subfamilia: † Karagandoceratinae
Genus: † Masonoceras
Species: † M. kentuckiense
Name
Masonoceras Work & Manger, 2002
Type species: Masonoceras kentuckiense Work & Manger, 2002: 575
References
Work, D.M. & Manger, W.L. 2002. Masonoceras, a new karagandoceratid ammonoid from the lower Mississippian (Lower Osagean) of Kentucky. Journal of Paleontology 76(3): 574–577. JSTOR Reference page.
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