Assertion: echinoderm's skeleton | /r/HasProperty | major contributors
Facets:
value: to many limestone formations
type: LOCATION
value: geologically
type: DEGREE
Source sentences:
text: Geologically, the value of echinoderms is in their ossified skeletons, which are major contributors to many limestone formations, and can provide valuable clues as to the geological environment.
text: The echinoderms are important both biologically and geologically: biologically because few other groupings are so abundant in the biotic desert of the deep sea, as well as the shallower oceans, and geologically as their ossified skeletons are major contributors to many limestone formations, and can provide valuable clues as to the geological environment.