Assertion: mastoid process's portion | /r/HasProperty | wedged at the base of the skull
Facets:
value: between the sphenoid
type: LOCATION
value: in
type: LOCATION
value: between occipital
type: LOCATION
Source sentences:
text: [pyramis]).The petrous portion or pyramid is pyramidal and is wedged in at the base of the skull between the sphenoid and occipital.