Mesodesma is a genus of saltwater clams, marine bivalve mollusks in the family Mesodesmatidae. This is the type genus of the family Mesodesmatidae. There are numerous species within the genus Mesodesma, including: ... Found on http://en.wikipedia.org/wiki/Mesodesma
1) Marine edible bivalve 
Mesodesma is a genus of saltwater clams, marine bivalve mollusks in the family Mesodesmatidae. This is the type genus of the family Mesodesmatidae. There are numerous species within the genus Mesodesma, including: ...