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Glossary entry

Stratigraphic time

Millions years ago: 485.4 ±1.9 – 470 ±1.4

Ordovician

EdCaCaCaCaOrOrOrSiSiSiSiDeDeDeCarCarPePePeTrTrTrJuJuJuCreCrePalEoOlMiPliPleHol


Eon Era System Period Series Epoch Stage Millions
years ago
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Upper Ordovician Hirnantian 443.8±1.5
Katian 445.2±1.4
Sandbian 453±0.7
Middle Ordovician Darriwilian 458.4±0.9
Dapingian 467.3±1.1
Lower Ordovician Floian 470±1.4
Tremadocian 477.7±1.4


Preceded by
Followed by

Lithostratigraphy

Morocco: Upper Fezouata formation, Zini formation, Oum-er-Rbia formation, Imfout formation, Lower Fezouata formation, Estonia: Leetse formation, Russia: Volkhov formation, Leetse formation, Iya formation, Chupino formation, Tolstochikha formation, Ust'kut formation, Czechia: Klabava formation, Mílina formation, Třenice formation, Lipoltice formation, Italy: Cabitza formation, Spain: Santed formation, Najerilla formation, Norway: Valhalfonna formation, Alum Shale formation, Björkåsholmen formation, Sweden: Alum Shale formation, Björkåsholmen formation, United Kingdom: Dol-Cyn-Afon formation, Shineton shale, France: Landeyran formation, La Maurerie formation, Cluse de l'Orb formation, Foulon formation, Grès Armoricain formation, Saint-Chinian formation, United States of America: Wahwah limestone, Fillmore formation, Ninemile formation, McKelligon Canyon formation, Shakopee dolomite, Oneota dolomite, Emigrant formation, Manitou formation, Canada: Broken Skull formation, Argentina: Los Sombreros formation, San Juan formation, Rupasca formation, Santa Rosita formation, Devendeus formation, La Silla formation, Peru: San José formation, Bolivia: Pircancha formation, Sella formation, Iscayachi formation, South Korea: Dongjeom formation, Dumugol formation, Pakistan: Misri Banda formation, Kazakhstan: Agalatas formation, Kendyktas formation, Kurdai formation, China: Ningkuo formation, Jingshan formation, Tonggao formation, Siliangssu formation, Yinchufu formation, Liuxia formation, Shijiautou formation, Madaoyu formation, Nantsinkwan formation, Australia: Nora formation, Emanuel formation, Gap Creek formation

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