Movatterモバイル変換

In thegeological timescale, theLudlow Epoch (from 426.7 ± 1.5 million years ago to 422.7 ± 1.6 million years ago) occurred during theSilurian Period, after the end of theHomerian Age. It is named for the town ofLudlow inShropshire,England.

The Ludlow Epoch is subdivided into two stages:Gorstian andLudfordian.

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.
^^a ^bHolland, C. (1982)."The State of Silurian Stratigraphy"(PDF).Episodes.1982 (3):21–23.doi:10.18814/epiiugs/1982/v5i3/004. Retrieved11 December 2020.
^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.

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)