Roadian

In the geologic timescale, the Roadian is an age or stage of the Permian. It is the earliest or lower of three subdivisions of the Guadalupian epoch or series. The Roadian lasted between 272.3 ± 0.5 and 268.8 ± 0.5 million years ago (Ma). It was preceded by the Kungurian and followed by the Wordian.

单词	Roadian
释义	Roadian 英语百科 Roadian In the geologic timescale, the Roadian is an age or stage of the Permian. It is the earliest or lower of three subdivisions of the Guadalupian epoch or series. The Roadian lasted between 272.3 ± 0.5 and 268.8 ± 0.5 million years ago (Ma). It was preceded by the Kungurian and followed by the Wordian.
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