Tectisumen

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Tectisumen
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Orthogastropoda
Infraclass: Cocculiniformia
Superfamily: Lepetelloidea
Family: Lepetellidae
Genus: Tectisumen
Finlay, 1927
Species

See text.

Tectisumen is a genus of very small deepwater limpets, marine gastropod molluscs in the family Lepetellidae.

Contents

[edit] Distribution

Species in this genus are found world-wide.

[edit] Habitat

Members of the genus are found at depths of between 90 and 600 m.

[edit] Description

These small limpets have their shell apex directed posteriorly, and have rhipidoglossate dentition (that is, with central, lateral, and marginal teeth). The shells are small, saddle-shaped, evidently evolved to achieve contact with a concave surface. They have been found attched to the inside wall of old polychaete tubes.

The radula formula is 2+1+1+1+2, the central tooth has only one large rounded cusp, and the marginals are reduced to two.

[edit] Species in the genus Tectisumen

[edit] References