Assertion: heron | /r/AtLocation | the fossil record
Facets:
value: in the paleogene period
type: TEMPORAL
Source sentences:
text: Herons are a fairly ancient lineage and first appeared in the fossil record in the Paleogene period; very few fossil herons have been found, though.
text: Herons are a fairly ancient lineage and first appeared in the fossil record in the Paleogene period; very few fossil herons have been found, though.