What is "fissurella"

Fissurella \Fis`su*rel"la\, n. [NL., dim. of L. fissura a fissure.] (Zo["o]l.) A genus of marine gastropod mollusks, having a conical or limpetlike shell, with an opening at the apex; -- called also keyhole limpet.

n. (context zoology English) Any of the genus (taxlink Fissurella genus) of marine gastropod mollusks.

Fissurella is a genus of small to medium-sized sea snails or limpets, marine gastropod mollusks in the family Fissurellidae, the keyhole limpets.