Famennian

The Famennian is the latter of two faunal stages in the Late Devonian epoch. It lasted from 372.2 ± 1.6 million years ago to 358.9 ± 0.4 million years ago. It was preceded by the Frasnian stage and followed by the Tournaisian stage.

It was during this age that tetrapods first appeared. In the seas, a novel major group of ammonoid cephalopods called clymeniids appeared, underwent tremendous diversification and spread worldwide, then just as suddenly went extinct.

单词	Famennian age
释义	Famennian age 英语百科 Famennian The Famennian is the latter of two faunal stages in the Late Devonian epoch. It lasted from 372.2 ± 1.6 million years ago to 358.9 ± 0.4 million years ago. It was preceded by the Frasnian stage and followed by the Tournaisian stage. It was during this age that tetrapods first appeared. In the seas, a novel major group of ammonoid cephalopods called clymeniids appeared, underwent tremendous diversification and spread worldwide, then just as suddenly went extinct.
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Famennian age

Famennian