Monotypic bivalve genera

Enigmonia is a genus of saltwater clams, a marine bivalve mollusc in the family Anomiidae, the jingle shells. Enigmonia aenigmatica, the mangrove jingle shell clam, is the only species in this monotypic genus. It is found living on mangroves in the Indo-Pacific Ocean.

Antillipecten is a monotypic genus of bivalves in the family Pectinidae. The only species is Antillipecten antillarum, also known as the Antillean scallop. It can be found in Caribbean waters, ranging from southern Florida to the West Indies and Bermuda.