OSTRACODS
Scrabble letter values: O1S1T1R1A1C3O1D2S1 = 12
Definition
OSTRACODS is the plural of OSTRACOD.
noun OSTRACOD: tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell.
Synonyms of OSTRACOD: seed_shrimp, mussel_shrimp