Xiagou Formation
The Xiagou Formation is the middle strata of the Xinminbao Group. It is named for its type site in , in the of Gansu Province, northwestern China and is considered Early Cretaceous in age. It is known outside the specialized world of Chinese geology as the site of a Lagerstätte in which the fossils were preserved of Gansus yumenensis, the earliest true modern bird.
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Xiagou Formation
The Xiagou Formation is the middle strata of the Xinminbao Group. It is named for its type site in , in the of Gansu Province, northwestern China and is considered Early Cretaceous in age. It is known outside the specialized world of Chinese geology as the site of a Lagerstätte in which the fossils were preserved of Gansus yumenensis, the earliest true modern bird.
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The Xiagou Formation is the mi ...... the earliest true modern bird.
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下沟组是位于中国甘肃玉门市、青海、内蒙古等的上白垩世地层，1 ...... 层以紫红、褐黄、灰绿、灰、黑灰色碎屑岩为主，间夹、泥灰岩等。
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Xiagou Formation
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Aptian
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The Xiagou Formation is the mi ...... the earliest true modern bird.
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下沟组是位于中国甘肃玉门市、青海、内蒙古等的上白垩世地层，1 ...... 层以紫红、褐黄、灰绿、灰、黑灰色碎屑岩为主，间夹、泥灰岩等。
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Xiagou Formation
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下沟组
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