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Taxonomy
Family:
CALYPTRAEIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Calyptraeoidea (Superfamily)
> Calyptraeidae (Family)
> Maoricrypta (Genus)
> costata (Species)
Genus Synonyms:
=Maoricrypta (Zeacrypta) Finlay, 1926
=Zeacrypta Finlay, 1926
Synonymised Names:
=Crepidula costata G. B. Sowerby I, 1824
=Crepidula costata Deshayes, 1830
=Crepidula lineolata Deshayes, 1830
Images: Maoricrypta costata (G.B. Sowerby I, 1824)
Found intertidally under rocks, down to about 25 fathoms. 42mm
Under rocks at low tide. 45mm
Found intertidally under rocks. 20-25mm
Living on the back of a Buccinulum in a rock pool, Henderson Bay, Far North, NZ. 10-15mm
Taxonomy
Family:
CALYPTRAEIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Calyptraeoidea (Superfamily)
> Calyptraeidae (Family)
> Maoricrypta (Genus)
> costata (Species)
Genus Synonyms:
=Maoricrypta (Zeacrypta) Finlay, 1926
=Zeacrypta Finlay, 1926
Synonymised Names:
=Crepidula costata G. B. Sowerby I, 1824
=Crepidula costata Deshayes, 1830
=Crepidula lineolata Deshayes, 1830
Details: Maoricrypta costata (G.B. Sowerby I, 1824)
Size/Grows to:
Length 60mm, Width 40mm
Distribution:
Northland to Mahia, living intertidally to 47 metres, attached to undersides of rocks and on living Perna canaliculus
Geographical Range:
ACE.
Notes:
Ribbed Slipper Shell, Marine, Endemic
Distribution Map
 
References and Publications

Key to Geographical Ranges
NZ Map showing Geographical Ranges
The symbols K.A.C.F.M.An. are used to indicate the geographical range of the species. They have been adopted to give an approximation of the range of each species within New Zealand.
K=
Kermadec Islands
A=
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
C=
Cookian - Lower North Island and the northern part of the South Island
F=
Forsterian - Otago, Fiordland and Stewart Island
M=
Moriorian - Chatham Islands, Pitt Island
An=
Antipodean - Subantarctic Islands of New Zealand
Fw =
Freshwater
L =
Land
N =
North Island
S =
South Island
E =
Endemic
I =
Introduced
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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