Pridoli Epoch

Short description: Final Series (Epoch) of the Silurian

Přídolí

422.7 ± 1.6 – 419.62 ± 1.36 Ma

PreЄ

A map of Earth as it appeared 420 million years ago during the Přídolí Epoch

Chronology

Silurian graphical timeline

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Paleozoic

Silurian

Late O

Llandovery

95%;|Wenlock}}

90%;|Ludlow}}

Přídolí

Early D

Rhuddanian

Aeronian

Telychian

Sheinwoodian

Homerian

Gorstian

Ludfordian

Lau event

Mulde event[1]

Ireviken event[2]

Subdivision of the Silurian according to the ICS, as of 2021.[3]
Vertical axis scale: millions of years ago.

Etymology
Name formality| Formal
Name ratified| 1984
Usage information
Celestial body| Earth
Regional usage| Global (ICS)
Time scale(s) used| ICS Time Scale
Definition
Chronological unit| Epoch
Stratigraphic unit| Series
Time span formality| Formal
Lower boundary definition| FAD of the graptolite Monograptus parultimus
Lower boundary GSSP| Požáry Section, Řeporyje District, Prague, Czech Republic
[ ⚑ ] 50°01′40″N 14°19′30″E﻿ / ﻿50.0277°N 14.3249°E﻿ / 50.0277; 14.3249
GSSP ratified| 1984[4][5]
Upper boundary definition| FAD of the graptolite Monograptus uniformis
Upper boundary GSSP| Klonk, Prague, Czech Republic
[ ⚑ ] 49°51′18″N 13°47′31″E﻿ / ﻿49.8550°N 13.7920°E﻿ / 49.8550; 13.7920
GSSP ratified| 1972[6]

In the geologic timescale, the Přídolí Epoch (cs) is the uppermost subdivision of the Silurian Period, dated at between 422.7 ± 1.6 and 419.62 ± 1.36 mya (million years ago). The Přídolí Epoch succeeds the Ludfordian Stage and precedes the Lochkovian, the lowest of three stages within the Lower Devonian geological epoch. It is named after one locality at the Homolka a Přídolí nature reserve near the Prague suburb, Slivenec, in the Czech Republic.[7] The GSSP is located within the Požáry Formation, overlying the Kopanina Formation. Přídolí is the old name of a cadastral field area.[8]

The Šilalė Event, a negative carbon isotope excursion corresponding to an extinction event of conodonts, occurred during the early Pridoli.[9]

Gondwana during the Přídolí, 420 Ma

## References

1. ↑ 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.
2. ↑ 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.
3. ↑ "Chart/Time Scale". International Commission on Stratigraphy. http://www.stratigraphy.org/index.php/ics-chart-timescale.
4. ↑ Lucas, Sepncer (6 November 2018). "The GSSP Method of Chronostratigraphy: A Critical Review". Frontiers in Earth Science 6: 191. doi:10.3389/feart.2018.00191. Bibcode: 2018FrEaS...6..191L.
5. ↑ Holland, C. (June 1985). "Series and Stages of the Silurian System". Episodes 8 (2): 101–103. doi:10.18814/epiiugs/1985/v8i2/005. https://timescalefoundation.org/references/Silurian1.pdf. Retrieved 11 December 2020.
6. ↑ Chlupáč, Ivo; Hladil, Jindrich (January 2000). "The global stratotype section and point of the Silurian-Devonian boundary". CFS Courier Forschungsinstitut Senckenberg. https://www.researchgate.net/publication/260135817. Retrieved 7 December 2020.
7. ↑ Gradstein, Felix M.; Ogg, James G.; Smith, Alan G. (2004). A Geologic Time Scale 2004. Cambridge University Press. ISBN 9780521786737.
8. ↑ 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. http://www.geology.cz/bulletin/contents/art1174.
9. ↑ Spiridonov, Andrej; Stankevič, Robertas; Gečas, Tomas; Brazauskas, Antanas; Kaminskas, Donatas; Musteikis, Petras; Kaveckas, Tomas; Meidla, Tõnu et al. (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. https://www.sciencedirect.com/science/article/abs/pii/S1342937X20301805. Retrieved 13 November 2022.

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Geological history of Earth

Cenozoic era
(present–66.0 Mya)|

| Quaternary (present–2.588 Mya)|

* Holocene (present–11.784 kya)
* Pleistocene (11.784 kya–2.588 Mya)

|

Neogene (2.588–23.03 Mya)|

* Pliocene (2.588–5.333 Mya)
* Miocene (5.333–23.03 Mya)

Paleogene (23.03–66.0 Mya)|

* Oligocene (23.03–33.9 Mya)
* Eocene (33.9–56.0 Mya)
* Paleocene (56.0–66.0 Mya)

Mesozoic era
(66.0–251.902 Mya)|

| Cretaceous (66.0–145.0 Mya)|

* Late (66.0–100.5 Mya)
* Early (100.5–145.0 Mya)

|

Jurassic (145.0–201.3 Mya)|

* Late (145.0–163.5 Mya)
* Middle (163.5–174.1 Mya)
* Early (174.1–201.3 Mya)

Triassic (201.3–251.902 Mya)|

* Late (201.3–237 Mya)
* Middle (237–247.2 Mya)
* Early (247.2–251.902 Mya)

Paleozoic era
(251.902–541.0 Mya)|

| Permian (251.902–298.9 Mya)|

* Lopingian (251.902–259.8 Mya)
* Guadalupian (259.8–272.3 Mya)
* Cisuralian (272.3–298.9 Mya)

|

Carboniferous (298.9–358.9 Mya)|

* Pennsylvanian (298.9–323.2 Mya)
* Mississippian (323.2–358.9 Mya)

Devonian (358.9–419.2 Mya)|

* Late (358.9–382.7 Mya)
* Middle (382.7–393.3 Mya)
* Early (393.3–419.2 Mya)

Silurian (419.2–443.8 Mya)|

* Pridoli (419.2–423.0 Mya)
* Ludlow (423.0–427.4 Mya)
* Wenlock (427.4–433.4 Mya)
* Llandovery (433.4–443.8 Mya)

Ordovician (443.8–485.4 Mya)|

* Late (443.8–458.4 Mya)
* Middle (458.4–470.0 Mya)
* Early (470.0–485.4 Mya)

Cambrian (485.4–541.0 Mya)|

* Furongian (485.4–497 Mya)
* Miaolingian (497–509 Mya)
* Series 2 (509–521 Mya)
* Terreneuvian (521–541.0 Mya)

Proterozoic eon
(541.0 Mya–2.5 Gya)|

| Neoproterozoic (541.0 Mya–1 Gya)|

* Ediacaran (541.0–~635 Mya)
* Cryogenian (~635–~720 Mya)
* Tonian (~720 Mya–1 Gya)

|

Mesoproterozoic (1–1.6 Gya)|

* Stenian (1–1.2 Gya)
* Ectasian (1.2–1.4 Gya)
* Calymmian (1.4–1.6 Gya)

Paleoproterozoic (1.6–2.5 Gya)|

* Statherian (1.6–1.8 Gya)
* Orosirian (1.8–2.05 Gya)
* Rhyacian (2.05–2.3 Gya)
* Siderian (2.3–2.5 Gya)

Archean eon (2.5–4 Gya)|

| Eras|

* Neoarchean (2.5–2.8 Gya)
* Mesoarchean (2.8–3.2 Gya)
* Paleoarchean (3.2–3.6 Gya)
* Eoarchean (3.6–4 Gya)

|

Hadean eon (4–4.6 Gya)|

|  |

|

kya = thousands years ago. Mya = millions years ago. Gya = billions years ago.
See also: Geologic time scale

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