| Seguenzioidea | |
|---|---|
 | |
| An apertural view of a shell of Perrinia concinna (family Chilodontidae) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Superfamily: | Seguenzioidea Verril, 1884 |
| Families | |
See text | |
Seguenzioidea is a superfamily of minute to medium-sized sea snails, marine gastropod mollusks in the clade Vetigastropoda. [2] [3]
The distinctive characteristics of the shells of the Seguenzioidea are:
This superfamily was placed in part or in whole previously to 1979 either in the Archaeogastropoda near the superfamily Trochoidea or in the Caenogastropoda near the superfamily Stromboidea. [5] In 1987 Salvini-Plawén and Haszprunar changed its status to the suborder Seguenziina, based on the radular formula that they considered to be intermediate between "rhipidoglossate" and "taenioglossate". [6] At about the same time in 1987 Goryachev elevated the superfamily to ordinal status Seguenziiformes in the superorder Littorinimorpha, based on the taenioglossal radula. [7]
2005 taxonomy according to Bouchet & Rocroi, 2005. (Families that are exclusively fossil are indicated with a dagger †.)
Kano et al. (2009) [8] elevated the subfamily Calliotropinae to the family level as the Calliotropidae, and the subfamily Cataeginae to family level as the Cataegidae. [8]
The superfamily Seguenzioidea consists of six families: [9]
Neritoidea is a taxonomic superfamily of mostly sea snails, nerites and their allies, marine gastropod mollusks in the order Cycloneritida.
Neomphaloidea is a superfamily of deep-sea snails or limpets, marine gastropod mollusks. Neomphaloidea is the only superfamily in the order Neomphalida.
Chilodontaidae is a taxonomic family of mostly small deepwater sea snails, marine gastropod molluscs in the clade Vetigastropoda.
Lissotesta is a genus of minute sea snails or micromolluscs, marine gastropod molluscs, unassigned in the superfamily Seguenzioidea.
Seguenziidae is a family of very small deepwater sea snails, marine gastropod mollusks in the superfamily Seguenzioidea.
Eucyclidae is a family of gastropods in the superfamily Seguenzioidea.
Vetigastropoda is a major taxonomic group of sea snails, marine gastropod mollusks that form a very ancient lineage. Taxonomically the Vetigastropoda are sometimes treated as an order, although they are treated as an unranked clade in Bouchet and Rocroi, 2005.
The Cerithioidea is a superfamily of marine, brackish water and freshwater gastropod containing more than 200 genera. The Cerithoidea are included in the clade Sorbeoconcha. The original name of this superfamily was Cerithiacea, in keeping with common superfamily endings at the time.
The Hyalogyrinidae is a taxonomic family of sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia.
Ancistrobasis is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.
Asthelys is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.
Basilissopsis is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.
Guttula is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.
Anekes is a genus of sea snails, marine gastropod mollusks, unassigned in the superfamily Seguenzioidea.
Eudaronia is a genus of sea snails, marine gastropod mollusks in the family Eudaroniidae within the superfamily Seguenzioidea.
Quinnia is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Seguenziidae.
Adeuomphalus is a genus of sea snails, marine gastropod mollusks unassigned to family within the superfamily Seguenzioidea.
Spinicalliotropis is a genus of sea snail, a marine gastropod mollusk in the family Eucyclidae.
The Skeneidae are a speciose family of minute to small marine gastropod molluscs in the superfamily Trochoidea.
Cataegidae is a family of small sea snails, marine gastropod mollusks in the superfamily Seguenzioidea.