Assertion: lamprey's mouth | /r/HasProperty | overhung
Facets:
value: in hagfish
type: OTHER
value: by a rostrum
type: OTHER
Source sentences:
text: In hagfish, the mouth is ventral and overhung by a rostrum, and it contains a dental plate that can be rapidly retracted, enabling the animal to bite off fragments of tissue from the dead and decaying fish on which it feeds.