The Famennian is one of two faunal stages in the Late Devonian epoch. It lasted from {Geologic Ages Inline|Famennian} million years ago to {Geologic Ages Inline|Tournaisian} 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 majo...