https://gcmd.earthdata.nasa.gov/kms/concept/f6913b28-5a77-4042-97ef-fcbf743c2982
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definition | The Givetian is one of two faunal stages in the Middle Devonian period. It lasted from 387.7 million years ago to 382.7 million years ago. It was preceded by the Eifelian stage and followed by the Frasnian stage. | |||||||||
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in scheme | chronounits original |