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Japanese archipelago, Sea of Japan and surrounding part of continental East Asia in Early Miocene (23–18 Ma)
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Japanese archipelago, Sea of Japan and surrounding part of continental East Asia in Middle Pliocene to Late Pliocene (3.5–2 Ma)
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Japanese archipelago at the Last Glacial Maximum about 20,000 years ago, thin black line indicates present-day shorelines:Vegetated landUnvegetated landOcean