Assertion: true oyster | /r/HasProperty | family ostreidae
Facets:
Source sentences:
text: This form has allowed the close attachment of one valve to a hard surface, and although some groups still retain byssal attachment (family Anomiidae), others have forsaken this for cementation, as in the true oysters (family Ostreidae), where the left valve is cemented to estuarine hard surfaces.
text: They are not closely related to true oysters (family Ostreidae); however, they do share some habits such as cementing themselves to rocks rather than attaching themselves by a byssus.
text: True oysters (family Ostreidae) include species of Ostrea, Crassostrea, and Pycnodonte.