Era
Silurian
sih-LOOR-ee-un
Also Known As Gotlandian An older synonym, taken from the fossil-bearing strata of the Baltic island of Gotland, before the name Silurian (after the Silures of Wales) became standard.
Phanerozoic
The Silurian is the third and shortest period of the Paleozoic Era, spanning about 443.1 to 419.62 million years ago. It opened with recovery from the Late Ordovician mass extinction and is notable as the interval when vascular plants and several arthropod lineages first became fully established on land. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Start (Million Years Ago)Standard boundary age from the ICS International Chronostratigraphic Chart; not independently re-dated by this atlas. End (Million Years Ago)Standard boundary age from the ICS International Chronostratigraphic Chart; not independently re-dated by this atlas. Key EventVascular plants emerged from more primitive land plants, dikaryan and glomeromycotan fungi expanded, and three groups of arthropods became fully terrestrialized, the first substantial colonization of land by complex life. 1 Defining Event Defining Event Silurian
Filter Results11 entries
Connections
Anticipated By
Associated With
Source Bertie Group (Wikipedia)
Source Brandon Bridge Formation (Wikipedia)
Source Dob's Linn (Wikipedia)
Source Great Glen Fault (Wikipedia)
Source Coalbrookdale Formation (Wikipedia)
Source List of Lake Erie Islands (Wikipedia)
Source Late Ordovician Mass Extinction (Wikipedia)
Source Old Red Sandstone (Wikipedia)
Source Scandinavian Mountains (Wikipedia)
Source Wikipedia: Organ Pipes National Park - Wikipedia
Source Transantarctic Mountains (Wikipedia)
Source Wye Valley (Wikipedia)
Has Geologic Rank
Precursor To
Sources
1. Silurian (Wikipedia)
Wikimedia FoundationIntroduction
The Silurian is the third and shortest period of the Paleozoic Era, and the third of twelve periods of the Phanerozoic Eon.
Lead section
One important event in this period was the initial establishment of terrestrial life in what is known as the Silurian-Devonian Terrestrial Revolution: vascular plants emerged from more primitive land plants, dikaryan fungi started expanding and diversifying along with glomeromycotan fungi, and three groups of arthropods (myriapods, arachnids and hexapods) became fully terrestrialized.
- Etymology
- Classification
- Timespan (start)
- Timespan (end)
Lead paragraph
The base of the Silurian is set at a series of major Ordovician-Silurian extinction events when up to 60% of marine genera were wiped out.
Lead paragraph, defining event
Another significant evolutionary milestone during the Silurian was the diversification of jawed fish, which include placoderms, acanthodians (which gave rise to cartilaginous fish) and osteichthyan (bony fish, further divided into lobe-finned and ray-finned fishes), although this corresponded to sharp decline of jawless fish such as conodonts and ostracoderms.
View the Source Late Ordovician Mass Extinction (Wikipedia)
Wikimedia FoundationAssociated With: Late Ordovician Mass ExtinctionView the Source Brandon Bridge Formation (Wikipedia)
Associated With: Brandon Bridge Formation, Lead paragraph
It preserves fossils dating back to the Silurian period, including those of graptolites, conodonts and Parioscorpio.
Associated With: Brandon Bridge Formation, Lead, age Silurian
It preserves fossils dating back to the Silurian period, including those of graptolites, conodonts and Parioscorpio.
View the SourceCoalbrookdale Formation (Wikipedia)
Associated With: Herefordshire Lagerstätte, Lead paragraph
Coalbrookdale Formation, earlier known as Wenlock Shale or Wenlock Shale Formation and also referred to as Herefordshire Lagerstätte in palaeontology, is a fossil-rich deposit (Konservat-Lagerstätte) in Powys and Herefordshire at the England-Wales border in UK. It belongs to the Wenlock Series of the Silurian Period within the Homerian Age (about 430 million years ago).
Associated With: Herefordshire Lagerstätte, Lead, age Silurian
It belongs to the Wenlock Series of the Silurian Period within the Homerian Age (about 430 million years ago).
View the SourceBertie Group (Wikipedia)
Associated With: Bertie Group, Lead, age SilurianQuote, Associated With: Bertie Group, Lead, age Silurian
The Bertie Group or Bertie Limestone, also referred to as the Bertie Dolomite and the Bertie Formation, is an upper Silurian (Pridoli, or Cayugan) geologic group and Lagerstätte in southern Ontario, Canada, and western New York State, United States.
Dob's Linn (Wikipedia)
Associated With: Dob's Linn, Lead, age SilurianQuote, Associated With: Dob's Linn, Lead, age Silurian
Dob's Linn is important in geology as the location of the Global Boundary Stratotype Section and Point (GSSP) which marks the boundary between the Ordovician and Silurian periods, and marks the base of the Llandovery epoch, on the geologic time scale.
Great Glen Fault (Wikipedia)
Associated With: Great Glen Fault, Article text, age SilurianQuote, Associated With: Great Glen Fault, Article text, age Silurian
It formed towards the end of the Caledonian orogeny associated with the collision between the Laurentia and Baltic tectonic plates at the end of the Silurian continuing into the Early Devonian (likely age range 430-390 Ma (million years)).
List of Lake Erie Islands (Wikipedia)
Associated With: Lake Erie Islands, Article text, age SilurianQuote, Associated With: Lake Erie Islands, Article text, age Silurian
The Lake Erie Islands are geologically part of the Silurian Columbus Limestone.
Old Red Sandstone (Wikipedia)
Associated With: Old Red Sandstone, Article text, age SilurianQuote, Associated With: Old Red Sandstone, Article text, age Silurian
The Old Red Sandstone describes a group of sedimentary rocks deposited in a variety of environments in the late Silurian, through the Devonian and into the earliest part of the Carboniferous.
Scandinavian Mountains (Wikipedia)
Associated With: Scandinavian Mountains, Article text, age SilurianQuote, Associated With: Scandinavian Mountains, Article text, age Silurian
The lower unit is made up Ediacaran (Vendian), Cambrian, Ordovician and Silurian-aged sedimentary rocks.
Wikipedia: Organ Pipes National Park - Wikipedia
Associated With: The Organ Pipes, Victoria, Lead, age SilurianQuote, Associated With: The Organ Pipes, Victoria, Lead, age Silurian
The bottom of the valley of Jackson Creek also exposes a prehistoric buried creek valley, which is cut into 400 million year-old (Silurian) mudstones and sandstones.
Transantarctic Mountains (Wikipedia)
Associated With: Transantarctic Mountains, Article text, age SilurianQuote, Associated With: Transantarctic Mountains, Article text, age Silurian
The sedimentary layers include the Beacon Supergroup sandstones, siltstones, and coal deposited beginning in the Silurian period and continuing into the Jurassic.
Wye Valley (Wikipedia)
Associated With: Wye Valley, Article text, age SilurianQuote, Associated With: Wye Valley, Article text, age Silurian
Close to Hereford, the geology of the area around the village of Woolhope is largely made up of Silurian limestones, shales and sandstones.
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