The Katian is the second stage of the Upper Ordovician. It is preceded by the Sandbian and succeeded by the Hirnantian Stage. The Katian began 453 million years ago and lasted for about 7.8 million years until the beginning of the Hirnantian 445.2 million years ago.[7]
During the Katian the climate cooled which started the Late Ordovician glaciation.
^Wellman, C.H.; Gray, J. (2000). "The microfossil record of early land plants". Phil. Trans. R. Soc. B. 355 (1398): 717–732. doi:10.1098/rstb.2000.0612. PMC 1692785. PMID 10905606.
^Korochantseva, Ekaterina; Trieloff, Mario; Lorenz, Cyrill; Buykin, Alexey; Ivanova, Marina; Schwarz, Winfried; Hopp, Jens; Jessberger, Elmar (2007). "L-chondrite asteroid breakup tied to Ordovician meteorite shower by multiple isochron 40 Ar- 39 Ar dating". Meteoritics & Planetary Science. 42 (1): 113–130. Bibcode:2007M&PS...42..113K. doi:10.1111/j.1945-5100.2007.tb00221.x.
^Lindskog, A.; Costa, M. M.; Rasmussen, C.M.Ø.; Connelly, J. N.; Eriksson, M. E. (2017-01-24). "Refined Ordovician timescale reveals no link between asteroid breakup and biodiversification". Nature Communications. 8: 14066. doi:10.1038/ncomms14066. ISSN 2041-1723. PMC 5286199. PMID 28117834. It has been suggested that the Middle Ordovician meteorite bombardment played a crucial role in the Great Ordovician Biodiversification Event, but this study shows that the two phenomena were unrelated
^"Chart/Time Scale". www.stratigraphy.org. International Commission on Stratigraphy.
^Goldman, Daniel; Leslie, Stephen; Nõlvak, Jaak; Young, Seth; Bergström, Stig; Huff, Warren (December 2007). "The Global Stratotype Section and Point (GSSP) for the base of the Katian Stage of the Upper Ordovician Series at Black Knob Ridge, Southeastern Oklahoma, USA". Episodes. 30 (4): 258–270. doi:10.18814/epiiugs/2007/v30i4/002. Retrieved 13 December 2020.
^Chen, Xu; Rong, Jiayu; Fan, Junxuan; Zhan, Renbin; Mitchell, Charles; Harper, David; Melchin, Michael; Peng, Ping'an; Finney, Stan; Wang, Xiaofeng (September 2006). "The Global Boundary Stratotype Section and Point (GSSP) for the base of the Hirnantian Stage (the uppermost of the Ordovician System)". Episodes. 29 (3): 183–195. doi:10.18814/epiiugs/2006/v29i3/004.
The Katian is the second stage of the Upper Ordovician. It is preceded by the Sandbian and succeeded by the Hirnantian Stage. The Katian began 453 million...
the late Katian, just before the Katian-Hirnantian boundary, likely reflects a global enlargement of oxygen minimum zones. During the late Katian, thallium...
covers the Sandbian and the first half of the Katian. The Ashgill represents the second half of the Katian, plus the Hirnantian. The Ashgill Epoch, the...
and Europe throughout the Ordovician, though most species occur in the Katian stage of the Late Ordovician. Reports of Cameroceras fossils from the Wenlock...
the Upper Ordovician. It follows the Darriwilian and is succeeded by the Katian. Its lower boundary is defined as the first appearance datum of the graptolite...
The Mali cobra (Naja katiensis), also called the Katian spitting cobra or West African brown spitting cobra, is a species of spitting cobra found in West...
extinct genus of marellomorph arthropod known from the Late Ordovician (Katian) Kirkfield Formation of Ontario, Canada. It is a member of Marellida, and...
The Anzaldo Formation is a Katian geologic formation of central Bolivia. The formation belongs to the Cochabamba Group, overlies the Capinota Formation...
The Cottian Alps (/ˈkɒtiən ˈælps/; French: Alpes Cottiennes [alp kɔtjɛn]; Italian: Alpi Cozie [ˈalpi ˈkɔttsje]) are a mountain range in the southwestern...
(Dapingian) strata of Argentina. Spores from the Lindegård Mudstone (late Katian–early Hirnantian) represent the earliest record of early land plant spores...
-A. (2012). "Diverse early endobiotic coral symbiont assemblage from the Katian (Late Ordovician) of Baltica". Palaeogeography, Palaeoclimatology, Palaeoecology...
a thrust contact with the Killey Bridge and Tirnaskea Formation (upper Katian and Hirnantian, respectively), exposed south of the Well Field, which lies...
arthropods. Fossils of Megalograptus have been recovered in deposits of Katian (Late Ordovician) age in North America. The genus contains five species:...
-A. (2012). "Diverse early endobiotic coral symbiont assemblage from the Katian (Late Ordovician) of Baltica". Palaeogeography, Palaeoclimatology, Palaeoecology...
−390 — – −380 — – −370 — – −360 — O S D L Ll W Lu Pridoli E M L Sandbian Katian Hirnantian Rhuddanian Aeronian Telychian Sheinwoodian Homerian Gorstian...
et al. (2024) describe a specimen of Toxochasmops vormsiensis from the Katian Kõrgessaare Formation (Estonia) preserved molted within the body chamber...
craniopsid brachiopod. Deloprosopus dawesi Sp. nov Valid Jin et al. Ordovician (Katian) Merqujoq Formation Greenland A member of Pentamerida belonging to the...
brownish bodies on the bedding planes reported from the Late Ordovician (Katian) Vauréal Formation (Canada) by Knaust & Desrochers (2019), tentatively interpreted...
a geologic formation in France. It preserves fossils dating back to the Katian to Hirnantian (Kralodvorian to Kosovian in the regional stratigraphy) stages...
The earliest species and the only one known from the Ordovician (upper Katian) is Sambremeusaspis fossesensis. The Phacopidae became a prominent family...
Lagerstätte in Ontario, Canada. It preserves fossils dating back to the Katian stage of the Ordovician period, or Shermanian to Chatfieldian in the regional...
Pterygometopidae are a family of trilobites, that is known from the Floian to the Katian (Ordovician), and reappears from the Telychian to the Sheinwoodian (Silurian)...
Global Information