APHOTOMARINE

An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.

Caenogastropoda (Subclass) > Littorinimorpha (Order) > Calyptraeoidea (Superfamily) >  Calyptraeidae (Family) - Chinaman's hats and Slipper limpets

Calyptraea
Calyptraea chinensis (Linnaeus, 1758) - Chinaman's hat

Crepidula
Crepidula fornicata (Linnaeus, 1758)
- American slipper limpet (invasive non-native species)

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Other members of the Superfamily Calyptraeoidea
From the authors collection of foreign shells,
species not recorded in the United Kingdom.

Littorinimorpha (Order) > Calyptraeoidea (Superfamily) >  Calyptraeidae (Family)

Bostrycapulus
Bostrycapulus aculeatus (Gmelin, 1791)
- Spiny slipper snail (SW Florida, USA)

Crepidula
Crepidula convexa Say, 1822
- Convex slippersnail / slipper limpet (E. USA.)
Crepidula plana Say, 1822
- Eastern white slippersnail / slipper limpet (E. USA.)

All the above are potential UK HORIZON species