Definitions for "Famennian"
The Devonian period of Earth history is divided up into seven stages, which are, from oldest to youngest: Lochkovian, Pragian, Emsian, Eifelian, Givetian, Frasnian and Famennian. Thus the Famennian is the youngest part of the Devonian.
Late Devonian age ranging from 365 Ma to 360 Ma.
The Famennian is one of two faunal stages in the Late Devonian epoch. It lasted from 374.5 ± 2.6 million years ago to 359.2 ± 2.5 million years ago. It was preceded by the Frasnian stage and followed by the Tournasian stage.