Assertion: crustacean | /r/PartOf | the subclass
Facets:
Source sentences:
text: Mussel shrimp, also called seed shrimp, or ostracod, any of a widely distributed group of crustaceans belonging to the subclass Ostracoda (class Crustacea) that resemble mussels in that the body is enclosed within a bivalved (two-valved) shell.