In the geological timescale, the Late Devonian epoch (from 385.3 ± 2.6 million years ago to 359.2 ± 2.5 million years ago) occurred during the Devonian period, after the end of the Givetian age. The table and timeline of geologic periods presented here is in accordance with the dates and nomenclature proposed by the International Commission on Stratigraphy. ... Disambiguation: Devonian is sometimes used to refer to the Southwestern Brythonic language, and the people of the county of Devon are sometimes referred to as Devonians The Devonian is a geologic period of the Paleozoic era. ... The Givetian (other names Erian, Senecan, Tioughniogan, Tioughnioga, Taghanic, Taghanican, Genesee, Geneseean) stage is the middle stage of the middle division of the Devonian period. ...
The Late Devonian epoch is subdivided into two stages: Frasnian and Famennian. The Frasnian Age is one of two ages in the Late Devonian Period. ... The Famennian Age is one of two ages in the Late Devonian Period. ...
The Devonian is a geologic period of the Paleozoic era.
The paleogeography was dominated by the supercontinent of Gondwana to the south, the continent of Siberia to the north, and the early formation of the small supercontinent of Euramerica in the middle.
The continent Euramerica (or Laurussia) was created in the early Devonian by the collision of Laurentia and Baltica, which rotated into the natural dry zone along the Tropic of Capricorn, which is formed as much in Paleozoic times as nowadays by the convergence of two great airmasses, the Hadley cell and the Ferrel cell.
Devonian rocks are oil and gas producers in some areas.
The west coast of Devonian North America, by contrast, was a passive margin with deep silty embayments, river deltas and estuaries, in today's Idaho and Nevada; an approaching volcanic
The evolving co-dependence of insects and seed-plants that characterizes a recognizably modern world had its genesis in the lateDevonian.
Feeds |
Contact