Assertion: cycad | /r/HasProperty | major part of the ecosystem
Facets:
value: during the jurassic period
type: TEMPORAL
Source sentences:
text: Cycads appear in fossils over 280 million years old and were a major part of the ecosystem during the Jurassic period,
text: They are a minor component of the flora in tropical and subtropical regions today, but during the Jurassic Period, they were a common sight in many parts of the world.