-
-
Eumetazoa (metazoans)
-
Bilateria (bilaterally symmetrical animals)
-
Protostomia (protostomes)
-
-
-
Mollusca (clams, snails, squids, and relatives)
-
Class Gastropoda
-
Order Archaeogastropoda
-
Family Seguenziidae
-
Genus Ancistrobasis
-
Genus Asthelys
-
Genus Basilissa
-
Genus Basilissopsis
-
Genus Calliobasis
-
Genus Carenzia
-
Genus Fluxinella
-
Genus Guttula
-
Genus Hadroconus
-
Genus Quinnia
-
Genus Seguenzia
-
Genus Seguenziopsis
-
Genus Sericogyra
-
Genus Thelyssina
-
-
-
-
-
-
-
-
-
-