FAMENNIAN

https://gcmd.earthdata.nasa.gov/kms/concept/2cdd9d46-afee-4566-9469-d043dc6d8acd

broader
https://gcmd.earthdata.nasa.gov/kms/concept/d6b9b49c-667e-4da7-bd72-32b4b5d89c0e original
narrower
2cdd9d46-afee-4566-9469-d043dc6d8acd original
change note
2019-11-21 08:39:46.0 [tstevens] Insert Concept
add broader relation (FAMENNIAN [2cdd9d46-afee-4566-9469-d043dc6d8acd,423465] - UPPER [d6b9b49c-667e-4da7-bd72-32b4b5d89c0e,423453]);
2019-12-17 12:10:48.0 [tstevens]
insert Definition (id: null
text: The Famennian is the latter of two faunal stages in the Late Devonian epoch. It lasted from 372.2 million years ago to 358.9 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. The beginning of the Famennian is marked by a major extinction event, the Kellwasser Event, and the end with a smaller but still quite severe extinction event, the Hangenberg Event.
language code: en);
definition The Famennian is the latter of two faunal stages in the Late Devonian epoch. It lasted from 372.2 million years ago to 358.9 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. The beginning of the Famennian is marked by a major extinction event, the Kellwasser Event, and the end with a smaller but still quite severe extinction event, the Hangenberg Event.
reference
text International Commission on Stratigraphy (http://www.stratigraphy.org/)
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in scheme chronounits original