Assertion: amber | /r/HasProperty | deposited in a delta of a prehistoric river
Facets:
Source sentences:
text: This amber was deposited in the late Eocene and early Oligocene in a delta of a prehistoric river, in a shallow part of a marine basin.
text: Amber was deposited in the late Eocene and early Oligocene in a delta of a prehistoric river, in a shallow part of a marine basin.