Assertion: vlinder guyot | /r/HasProperty | atoll
Facets:
Source sentences:
text: These limestones formed in lagoon and reef environments and contain fossils of bivalves, bryozoans, corals, echinoderms, foraminifera, gastropods, molluscs and rudists; rudists and corals were among the most important reef builders when at the time Vlinder Guyot was an atoll.