Givetian

{{short description|Fifth stage of the devonian and second stage of the Middle Devonian}}

{{Infobox geologic timespan

| name = Givetian

| color = Givetian

| time_start = 387.7

| time_start_uncertainty = 0.8

| time_end = 382.7

| time_end_uncertainty = 1.6

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| timeline = Devonian

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| name_formality = Formal

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| celestial_body = earth

| usage = Global (ICS)

| timescales_used = ICS Time Scale

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| chrono_unit = Age

| strat_unit = Stage

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| timespan_formality = Formal

| lower_boundary_def = FAD of the conodont Polygnathus hemiansatus

| lower_gssp_location = Jebel Mech Irdane, Tafilalt, Morocco

| lower_gssp_coords = {{Coord|31.2374|N|4.3541|W|display=inline}}

| lower_gssp_accept_date = 1994{{cite journal |last1=Walliser |first1=O. |last2=Bultynck |first2=P. |last3=Weddige |first3=K. |last4=Becker |first4=R. |last5=House |first5=M. |title=Definition of the Eifelian-Givetian Stage boundary |journal=Episodes |date=September 1995 |volume=18 |issue=3 |pages=107–115 |doi=10.18814/epiiugs/1995/v18i3/002 |url=https://www.researchgate.net/publication/262723723 |access-date=19 December 2020|doi-access=free }}

| upper_boundary_def = FAD of the conodont Ancyrodella rotundiloba

| upper_gssp_location = Col du Puech de la Suque, Montagne Noire, France

| upper_gssp_coords = {{Coord|43.5032|N|3.0868|E|display=inline}}

| upper_gssp_accept_date = 1986{{cite journal |last1=Klapper |first1=Gilbert |last2=Feist |first2=Raimund |last3=House |first3=Michael |title=Decision on the Boundary Stratotype for the Middle/Upper Devonian Series Boundary |journal=Episodes |date=June 1987 |volume=10 |issue=2 |pages=97–101 |doi=10.18814/epiiugs/1987/v10i2/004 |url=https://www.researchgate.net/publication/279761356 |access-date=19 December 2020|doi-access=free }}

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The Givetian is one of two faunal stages in the Middle Devonian Period. It lasted from {{Period start|Givetian}} million years ago to {{Period start|Frasnian}} 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.{{Cite book|last1=Becker|first1=R.T.|last2=Gradstein|first2=F.M.|last3=Hammer|first3=O.|chapter=Chapter 22 - The Devonian Period|date=2012|title=The Geologic Timescale 2012|page=578|editor1-last=Gradstein|editor1-first=F.M.|editor2-last=Ogg|editor2-first=J.G.|editor3-last=Schmitz|editor3-first=M.D.|editor4-last=Ogg|editor4-first=G.M.|publisher=Elsevier|language=en|chapter-url=http://www.sciencedirect.com/science/article/pii/B9780444594259000226|doi=10.1016/b978-0-444-59425-9.00022-6|isbn=978-0-444-59425-9}} The lower GSSP is located at Jebel Mech Irdane, Tafilalt, Morocco.