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{{Short description|Third stage of the Devonian}}

factoids
name	Emsian| color = Emsian| time_start = 407.6| time_start_uncertainty = 2.6| time_end = 393.3| time_end_uncertainty = 1.2| image_map = Geology of Asia 400Ma.jpg| caption_map = Paleogeography of the Emsian, 400 Ma| image_outcrop =| caption_outcrop =| image_art =| caption_art =
timeline	Devonian| former_subdivisions =| formerly_part_of =| partially_contained_in =| partially_contains =
name_formality	Formal| name_accept_date = 1985| alternate_spellings =| synonym1 =| synonym1_coined =| synonym2 =| synonym2_coined =| synonym3 =| synonym3_coined =| nicknames =| former_names =| proposed_names =
celestial_body	earth		LAST2=KIM	LAST3=WEDDIGE	LAST4=TALENT	LAST5=HOUSE	TITLE=DEFINITION OF THE PRAGIAN/EMSIAN STAGE BOUNDARY	DATE=DECEMBER 1997	ISSUE=4	DOI=10.18814/EPIIUGS/1997/V20I4/005	ACCESS-DATE=18 DECEMBER 2020, free,	First appearance datum>FAD of the conodont Polygnathus costatus partitus	Wetteldorf Richtschnitt>Wetteldorf Richtschnitt section, Wetteldorf, Eifel, Germany	50.1496	6.4716	display=inline}}		LAST2=KLAPPER	TITLE=STAGES OF THE DEVONIAN SYSTEM	DATE=JUNE 1985	ISSUE=2	DOI=10.18814/EPIIUGS/1985/V8I2/006	ACCESS-DATE=18 DECEMBER 2020, free, | o2 =| co2 =| temp =| sea_level =}}The Emsian is one of three faunal stages in the Early Devonian Epoch. It lasted from 407.6 ± 2.6 million years ago to 393.3 ± 1.2 million years ago. It was preceded by the Pragian Stage and followed by the Eifelian Stage. It is named after the Ems river in Germany.WEB, Emsian stage,weblink Encyclopedia Britannica, 2 October 2019, The GSSP is located in the Zinzil'ban Gorge in the Kitab State Geological Reserve of Uzbekistan, {{convert|35|cm|in}} above the contact with the Madmon Formation.In North America the Emsian Stage is represented by Sawkill or Sawkillian time. Biological events File:CarbonatePlatform.png|left|thumb|Emsian-age conical mud mounds at Hamar Laghdad, MoroccoMoroccoDuring this period, earliest known agoniatitid ammonoid fossils began appearing within this stage after first appearing in previous stage and began to evolutionarily radiate within this stage, in which a new ammonoid order Goniatitida rises in the end of Zlichovian stage (Siberian representation; corresponds to early Eifelian and after the end of Early Devonian, before 391.9 mya).JOURNAL, Early Emsian ammonoids from the eastern Anti-Atlas (Morocco) and their succession, Paläontologische Zeitschrift, 74, 4, 479–515, Klug, Christian, July 30, 1999, 10.1007/BF02988158, WEB,weblink Pragian/Zlichovian and Zlichovian/Dalejan boundary sections in the Lower Devonian of the Barrandian Area, Czech Republic, Chlupac, I., Lukes, P., January 1999, ResearchGate, June 26, 2018, Later agoniatitid ammonoids would die out in the Taghanic event in the upper middle Givetian. Goniatite ammonoids would give rise to further ammonoid orders, thus starting ammonoid dominance of marine fossils in further periods until their end at the Cretaceous-Paleogene mass extinction event. References {{Reflist}}{{Geological history|p|p}}{{Authority control}}{{geochronology-stub}}