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In the geologic timescale, thePřídolí Epoch (Czech pronunciation:[ˈpr̝̊iːdoliː]) is the uppermost subdivision of theSilurian Period, dated at between 422.7 ± 1.6 and 419.62 ± 1.36 mya (million years ago). The Přídolí Epoch succeeds theLudfordian Stage and precedes theLochkovian, the lowest of three stages within theLower Devonian geological epoch. It is named after one locality at theHomolka a Přídolínature reserve near thePrague suburb,Slivenec, in theCzech Republic.^[7] The GSSP is located within thePožáry Formation, overlying theKopanina Formation. Přídolí is the old name of acadastral field area.^[8]

TheŠilalė Event, a negative carbon isotope excursion corresponding to an extinction event ofconodonts, occurred during the early Pridoli.^[9]

References

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^Jeppsson, L.; Calner, M. (2007). "The Silurian Mulde Event and a scenario for secundo—secundo events".Earth and Environmental Science Transactions of the Royal Society of Edinburgh.93 (02):135–154.doi:10.1017/S0263593300000377.
^Munnecke, A.; Samtleben, C.; Bickert, T. (2003). "The Ireviken Event in the lower Silurian of Gotland, Sweden-relation to similar Palaeozoic and Proterozoic events".Palaeogeography, Palaeoclimatology, Palaeoecology.195 (1):99–124.doi:10.1016/S0031-0182(03)00304-3.
^"International Chronostratigraphic Chart"(PDF).International Commission on Stratigraphy. September 2023. RetrievedOctober 23, 2025.
^Lucas, Sepncer (6 November 2018)."The GSSP Method of Chronostratigraphy: A Critical Review".Frontiers in Earth Science.6: 191.Bibcode:2018FrEaS...6..191L.doi:10.3389/feart.2018.00191.
^Holland, C. (June 1985)."Series and Stages of the Silurian System"(PDF).Episodes.8 (2):101–103.doi:10.18814/epiiugs/1985/v8i2/005. Retrieved11 December 2020.
^Chlupáč, Ivo; Hladil, Jindrich (January 2000)."The global stratotype section and point of the Silurian-Devonian boundary".CFS Courier Forschungsinstitut Senckenberg. Retrieved7 December 2020.
^Gradstein, Felix M.; Ogg, James G.; Smith, Alan G. (2004).A Geologic Time Scale 2004. Cambridge University Press.ISBN 9780521786737.
^Manda, Štěpán; Frýda, Jiří (2010)."Silurian-Devonian boundary events and their influence on cephalopod evolution: evolutionary significance of cephalopod egg size during mass extinctions".Bulletin of Geosciences.85 (3):513–40.doi:10.3140/bull.geosci.1174.
^Spiridonov, Andrej; Stankevič, Robertas; Gečas, Tomas; Brazauskas, Antanas; Kaminskas, Donatas; Musteikis, Petras; Kaveckas, Tomas; Meidla, Tõnu; Bičkauskas, Giedrius; Ainsaar, Leho; Radzevičius, Sigitas (October 2020)."Ultra-high resolution multivariate record and multiscale causal analysis of Pridoli (late Silurian): Implications for global stratigraphy, turnover events, and climate-biota interactions".Gondwana Research.86:222–249.doi:10.1016/j.gr.2020.05.015.S2CID 225582759. Retrieved13 November 2022.

Geological history of Earth

Cenozoic Era
(present–66.0 Ma)

Quaternary(present–2.58 Ma)	Holocene (present–11.7 ka) Pleistocene (11.7 ka–2.58 Ma)
Neogene(2.58–23.0 Ma)	Pliocene (2.59–5.33 Ma) Miocene (5.33–23.0 Ma)
Paleogene(23.0–66.0 Ma)	Oligocene (23.0–33.9 Ma) Eocene (33.9–56.0 Ma) Paleocene (56.0–66.0 Ma)

Mesozoic Era
(66.0–252 Ma)

Cretaceous(66.0–145 Ma)	Late (66.0–100 Ma) Early (100–145 Ma)
Jurassic(145–201 Ma)	Late (145–164 Ma) Middle (164–174 Ma) Early (174–201 Ma)
Triassic(201–252 Ma)	Late (201–237 Ma) Middle (237–247 Ma) Early (247–252 Ma)

Paleozoic Era
(252–539 Ma)

Permian(252–299 Ma)	Lopingian (252–260 Ma) Guadalupian (260–272 Ma) Cisuralian (272–299 Ma)
Carboniferous(299–359 Ma)	Pennsylvanian (299–323 Ma) Mississippian (323–359 Ma)
Devonian(359–419 Ma)	Late (359–383 Ma) Middle (383–393 Ma) Early (393–419 Ma)
Silurian(419–444 Ma)	Pridoli (419–423 Ma) Ludlow (423–427 Ma) Wenlock (427–433 Ma) Llandovery (433–444 Ma)
Ordovician(444–485 Ma)	Late (444–458 Ma) Middle (458–470 Ma) Early (470–485 Ma)
Cambrian(485–539 Ma)	Furongian (485–497 Ma) Miaolingian (497–509 Ma) Series 2 (509–521 Ma) Terreneuvian (521–539 Ma)

Proterozoic Eon
(539 Ma–2.5 Ga)

Neoproterozoic(539 Ma–1 Ga)	Ediacaran (539–635 Ma) Cryogenian (635–720 Ma) Tonian (720 Ma–1 Ga)
Mesoproterozoic(1–1.6 Ga)	Stenian (1–1.2 Ga) Ectasian (1.2–1.4 Ga) Calymmian (1.4–1.6 Ga)
Paleoproterozoic(1.6–2.5 Ga)	Statherian (1.6–1.8 Ga) Orosirian (1.8–2.05 Ga) Rhyacian (2.05–2.3 Ga) Siderian (2.3–2.5 Ga)