Ancistrobasis | |
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Drawing with a basal and an apertural view of a shell of Ancistrobasis depressa | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Vetigastropoda |
Superfamily: | Seguenzioidea |
Family: | Seguenziidae |
Subfamily: | Seguenziinae |
Genus: | Ancistrobasis Dall, 1889 [1] |
Type species | |
Basilissa costulata Watson, R.B., 1879 | |
Species | |
See text | |
Synonyms [2] | |
Basilissa (Ancistrobasis)Dall, 1889 (original rank) Contents |
Ancistrobasis is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae. [2]
Dall (1889) regarded (with some doubt) Ancistrobasis as a section of the closely related genus Basilissa Watson, 1879.
This genus contains the dentate forms of species formerly included in the genus Basilissa .
Shell: The conical shell shows peripheral carina and collabral axial riblets. The midwhorl angulation and the spiral lirae are present on all whorls. The posterior sinus depth is shallow. The posterior sinus has an U-shape. The anterolateral sinus is absent. The rhomboidal aperture contains a basal and columellar sinus. The umbilical septum (a transverse plate secreted with early formed whorls of the shell) is absent. The shell contains pustulate microsculpture.
Radula: The rachidian tooth is broader than high with lateral wings prominent. The lateral tooth cusp is broad. The radula contains less than 10 marginal tooth pairs. [3]
Species within the genus Ancistrobasis include:
Calliostoma is a genus of small to medium-sized sea snails with gills and an operculum, marine gastropod molluscs within the family Calliostomatidae, the Calliostoma top snails. Previously this genus was placed within the family Trochidae. Calliostoma is the type genus of the family Calliostomatidae.
Chilodontaidae is a taxonomic family of mostly small deepwater sea snails, marine gastropod molluscs in the clade Vetigastropoda.
Seguenziidae is a family of very small deepwater sea snails, marine gastropod mollusks in the superfamily Seguenzioidea.
Ancistrobasis depressa is a species of sea snail, a marine gastropod mollusk in the family Seguenziidae.
Ancistrobasis largoi is a species of sea snail, a marine gastropod mollusk 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.
Calliobasis is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.
Calliotropis is a genus of sea snails, marine gastropod mollusks in the family Eucyclidae.
Fluxinella is a genus of sea snails, marine gastropod mollusks in the tribe Fluxinellini ( of the subfamily Seguenziinae in the family Seguenziidae.
Guttula is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.
Perrinia is a genus of sea snails, marine gastropod mollusks in the family Chilodontaidae.
Seguenzia is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.
Clavus is a genus of small sea snails, marine gastropod mollusks in the family Drilliidae.
Quinnia is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Seguenziidae.
Sericogyra is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.
Thelyssina is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.
Bathymophila callomphala is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.
Perrinia angulifera is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.
Basilissa is a genus of extremely small deep water sea snails. They are marine gastropod mollusks in the family Seguenziidae.