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Mongolia, China, though their relationship to modern Tsuga is not unambiguous. The earliest pollen attributed to the genus is known from the Upper Cretaceous of Poland, dating to around 90 million years ago. Abundant remains are only known from Eocene onwards, when the modern Tsuga crown group is thought to have begun to diversify. While formerly present in the region Tsuga became extinct in Europe during the Middle Pleistocene epoch

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