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– Name and definition
Givetian Stage proposed in 1879 by Jules Gosselet
– Accepted for the Middle Devonian by the Subcommission on Devonian Stratigraphy in 1981
– Named after the town of Givet in France
– Lasted from 387.7 million years ago to 382.7 million years ago
– Preceded by Eifelian Stage and followed by Frasnian Stage

– References
– Parry, S. F.; Noble, S. R.; Crowley, Q. G.; Wellman, C. H. (2011)
– Kaufmann, B.; Trapp, E.; Mezger, K. (2004)
– Algeo, T. J. (1998)
– Walliser, O.; Bultynck, P.; Weddige, K.; Becker, R.; House, M. (1995)
– Klapper, Gilbert; Feist, Raimund; House, Michael (1987)

– Further reading
– Klug, C (2002)

– Geological history of Earth
Devonian Period subdivisions: Lower/Early, Middle, Upper/Late
Givetian falls under Middle Devonian
– Overview of the Cenozoic Era, Quaternary, Neogene, and Paleogene periods
– Details on the Proterozoic and Archean Eons
– Explanation of abbreviations: ka, Ma, Ga

– See also
– Geologic time scale
– Geologyportal
– Worldportal
– Categories: Givetian, Middle Devonian, Devonian geochronology, Devonian Europe, Devonian North America

Givetian (Wikipedia)

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. It is named after the town of Givet in France. The oldest forests occurred during the late Givetian. The lower GSSP is located at Jebel Mech Irdane, Tafilalt, Morocco.

387.7 ± 0.8 – 382.7 ± 1.6 Ma
Name formalityFormal
Usage information
Celestial bodyEarth
Regional usageGlobal (ICS)
Time scale(s) usedICS Time Scale
Chronological unitAge
Stratigraphic unitStage
Time span formalityFormal
Lower boundary definitionFAD of the conodont Polygnathus hemiansatus
Lower boundary GSSPJebel Mech Irdane, Tafilalt, Morocco
31°14′15″N 4°21′15″W / 31.2374°N 4.3541°W / 31.2374; -4.3541
Lower GSSP ratified1994
Upper boundary definitionFAD of the conodont Ancyrodella rotundiloba
Upper boundary GSSPCol du Puech de la Suque, Montagne Noire, France
43°30′12″N 3°05′12″E / 43.5032°N 3.0868°E / 43.5032; 3.0868
Upper GSSP ratified1986
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