One of the mysteries of the English language finally explained.
A limpet which has an aperture at the apex of the shell, sometimes extending to the margin.
Family Fissurellidae, class Gastropoda
- ‘Cayenne keyhole limpets are easily identified due to the keyhole-shaped orifice at the apex of the shell.’
- ‘The giant keyhole limpet is a ‘primitive’ snail closely related to the abalone.’
- ‘And at the cutting edge of scientific medicine today, extracts from keyhole limpets are playing an important part in the development of vaccinations and treatments for skin cancer.’
- ‘Unlike other limpets, most keyhole limpets have a small hole in the top of their shell.’
- ‘This is the only keyhole limpet collected from these rocks, and it was found with other rocky intertidal snail shells such as whelks and top shells.’
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