Tectonatica impervia (Philippi 1845)
- Dataset
- Gastropods from the Burdwood Bank (southwestern Atlantic): an overview of species diversity
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Mollusca
- class
- Gastropoda
- order
- Littorinimorpha
- family
- Naticidae
- genus
- Tectonatica
- species
- Tectonatica impervia
description
Description. Shell height to 11.3 mm (up to 18.1 mm according to Dell 1990); ovate, solid. Protoconch of about 1 whorl; transition to teleoconch poorly defined. Teleoconch of up to 3.25 whorls, almost straight in outline; last whorl enlarged, very inflated, comprising about 95 % of total shell height. Suture impressed. Surface whitish; only sculptured with faint growth lines. Aperture elongate-ovate, interior white; columellar callus strongly thickened, expanded, partially or fully covering the umbilicus.
description
Fig. 3 F
materials_examined
Examined material. 4 sh. (MACN-In 40671)
Name
- Homonyms
- Tectonatica impervia (Philippi 1845)