Condylonucula maya
Condylonucula maya is a tiny species of saltwater clam, a marine bivalve mollusk or micromollusk in the family Nuculidae, the nut clams. This species grows to a length of about  and is believed to be the smallest living bivalve. It is found in shallow waters in the Caribbean Sea off the coast of Mexico. See also
 Smallest organisms

References

Nuculidae
Bivalves described in 1977