Silurian Period

416.0 to 443.7 million years ago.

 

Maps

The world, Silurian, Llandovery Epoch, 430 Ma, Global Paleogeographic Views of Earth History, NAU

The world, Silurian, Wenlock Epoch, 425 Ma, PALEOMAP Project

North America, Silurian, Llandovery Epoch, 430 Ma, Paleogeography and Geologic Evolution of North America, NAU

North America, Silurian, Ludlow Epoch, 420 Ma, Paleogeography and Geologic Evolution of North America, NAU

North America in the Silurian Period

North American Silurian Rocks (lavender)

 

General

Silurian, Palæos

Silurian, Wikipedia

The Silurian, Paleontology Portal

Geologic Time Table, Seafriends

 

Climate in the Silurian

See general sources above.

Silurian Climate, Ludlow Epoch, 420 Ma, PALEOMAP project

 

Life in the Silurian

Silurian: Life - The Biosphere, Palæos

Virtual Silurian Reef, Milwaukee Public Museum

Silurian: Life, University of California Museum of Paleontology

The Silurian Period: Plants Move Onto Land, Fossil-Facts-and-Finds.com

Silurian Fossils, Fossil Museum

The Ireviken Event, the Mulde Event, and the Lau Event. Wikipedia

 

Events during the Silurian

Continuing from the Ordovician Period, Laurentia and Baltica continue to move together. The Caledonian orogeny (mountain formation) enters the beginning of its main phases (Scandian and Grampian) that formed mountains in Scandanavia, Scotland, and Ireland. The Grampian Phase, like the Taconic orogeny, was caused by an island arc colliding with Laurentia.

Baltica and the Avalonia terrane continue to collide and suture.

As the world warms, sea levels rise and flood continents.

The first land plants appear.

Baltica begins full collision with the Laurentia land mass. The remainder of the Iapetus Ocean continues to narrow as Avalonia moves toward Laurentia.

A large peninsula, which included present day Australia and Antarctica, extends north from Gondwana.

Benambran orogeny, the Silurian phase of the Lachlan orogeny in Australia.

As sea levels fall again, three minor extinction events occur: the Ireviken Event, the Mulde Event, and the Lau Event.

Laurentia, Baltica and Avalonia begin to form the supercontinent of Euramerica, also known as Laurussia.

 

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© 2009, Mr. Varner.