Assertion: mastodon's remain | /r/AtLocation | that date
Facets:
value: to 7,600 years before present
type: TEMPORAL
Source sentences:
text: On St. Paul’s Island in Alaska, additional remains of the same species have subsequently been found that have been dated to 5,700 years before present, and on the Alaskan mainland, remains were found that date to 7,600 years before present.