Coordinates | [ ⚑ ] : 33°59′49″N 130°48′55″E / 33.9970°N 130.8153°E |
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Composition | |
Palaeontological Formation |
The Yamaga Formation is a palaeontological formation located in Japan . It dates to the Upper Oligocene period.[1]
Original source: https://en.wikipedia.org/wiki/Yamaga Formation.
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