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Superfamily of gastropods From Wikipedia, the free encyclopedia
Seguenzioidea is a superfamily of minute to medium-sized sea snails, marine gastropod mollusks in the clade Vetigastropoda.[2] [3]
Seguenzioidea Temporal range: | |
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An apertural view of a shell of Perrinia concinna (family Chilodontidae) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Vetigastropoda |
Superfamily: | Seguenzioidea Verrill, 1884 |
Families | |
See text |
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]
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