Assertion: gastropod's shell | /r/HasProperty | hinged at dorsal end
Facets:
value: by shell ligaments
type: CAUSE
value: by shell teeth
type: CAUSE
Source sentences:
text: As the name suggests, bivalves are enclosed in a pair of shells (valves are commonly called “shells”) that are hinged at the dorsal end by shell ligaments as well as shell teeth (Figure 3).