Webmaster's Reverse Coiled Gastropods

Cymbiola vespertilio (Linnaeus, 1758) Volema cochlidium (Linnaeus, 1758)
Sinistral - Tioman Island, Malaysia (53 mm.) Sinistral - Sri Lanka (66 mm.) (left)

 

Dextral - Cebu Philippines (right)

Pila ampullacea (Linnaeus, 1758)

Mactan Island, Cebu, Philippines (58 mm.)

Pila ampullacea (Linnaeus, 1758) Pila ampullacea (Linnaeus, 1758)

Busycon sinistrum Hollister, 1958 [dextral specimen of a normally sinistral species]

Little Talbot Island State Park, Duval Co., Florida (71 mm.)

Busycon sinistrum Hollister, 1958 [dextral specimen of a normally sinistral species]

Busycon sinistrum Hollister, 1958 [dextral specimen of a normally sinistral species]

Also see:  whelk2.htm & double.htm