Maoricrypta costata

Maoricrypta costata, or the Ribbed Slipper Shell, is a species of intertidal medium-sized sea snail, a marine gastropod mollusc in the family Calyptraeidae. ^[1]

Maoricrypta costata
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Family:	Calyptraeidae
Genus:	Maoricrypta
Species:	M. costata
Binomial name
Maoricrypta costata (Sowerby, 1824)
Synonyms
Crepidula costata Deshayes, 1830 (unaccepted- homonym and synonym of C. costata G.B. Sowerby I, 1824) Crepidula costata Sowerby, 1824 Crepidula lineolata Deshayes, 1830 (possible synonym)

Distribution

This species occurs along the East Coast of the North Island, New Zealand: Cape Reinga to Whakatāne.^[2]

Maoricrypta costata, ventral view showing "shelf" or "deck".