What is "scrobicularia"

Scrobicularia is a genus of bivalve mollusc belonging to the family Semelidae.

The genus Scrobicularia is sometimes placed as the sole genus in a family, Scrobicularidae. It is now often placed instead in the related family Semelidae, as shown in the infobox. However, this placement may change as molecular systematics provides new insights into the cladistics of the bivalves.