Assertion: mastodon's remain | /r/HasProperty | reported
Facets:
value: from the bayan mandahu formation
type: LOCATION
value: from the late oligocene
type: TEMPORAL
Source sentences:
text: While the earliest megalodon remains have been reported from the Late Oligocene, around 28 million years ago (mya), there is disagreement as to when it appeared, with dates ranging to as young as 16 mya.
text: Teeth and partial remains attributed to juvenile V. mongoliensis have also been reported from the Bayan Mandahu Formation, a prolific site in Inner Mongolia, China that is contemporaneous with the Djadochta Formation.