See text The Plicatulidae are a family of saltwater clams, marine bivalve mollusks, known commonly as kitten's paws or kittenpaws.

The family has a single living genus, Plicatula, with a second, Harpax known from fossils.

Plicatulidae are small, with weakly convex shells which are irregularly oval or even almost triangular.

Typically, they attach themselves to a hard surface by the right valve.

Plicatulidae members start off in the larval stage.