Assertion: giant clam's shell | /r/ObjectUse | used as money
Facets:
value: by native americans
type: OTHER
value: by australia's indigenous tribes
type: OTHER
value: by bivalves
type: OTHER
value: by sea slugs
type: OTHER
Source sentences:
text: This ecosystem is also notable for zig-zag oysters, octopuses, squid, cowries (the shells of which were once used as money by Australia's indigenous tribes), bivalves, and sea slugs.
text: The shells of cowries (a type of small gastropod) were used as money by Native Americans, and the pearls that grow in oysters, as the result of irritation by sand grains, have been treasured since time immemorial.