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Devonian

Also known as Devonian Period, Devonian System

The Devonian ( ) is a geologic period and system of the Paleozoic era during the Phanerozoic eon, spanning 60.7 million years from the end of the preceding Silurian period at million years ago (Ma), to the beginning of the succeeding Carboniferous period at Ma. It is the fourth period of both the Paleozoic and the Phanerozoic. It is named after Devon, South West England, where rocks from this period were first studied.

AI overview

The Devonian is a major chapter in Earth's history that lasted about 60.7 million years during the Paleozoic era, occurring roughly 419 to 359 million years ago. Scientists named it after Devon in South West England, where they first identified and studied rocks from this ancient time period.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Geologic timespan.name: Devonian
Geologic timespan.color: Devonian
Geologic timespan.time_start: 419.62
Geologic timespan.time_start_uncertainty: 1.36
Geologic timespan.time_end: 358.9
Geologic timespan.time_end_uncertainty: 0.4
Geologic timespan.image_map: Mollweide Paleographic Map of Earth, 390 Ma (Eifelian Age).png
Geologic timespan.caption_map: A map of Earth as it appeared 390 million years ago during the Middle Devonian Epoch
Geologic timespan.timeline: Devonian
Geologic timespan.name_formality: Formal
Geologic timespan.nicknames: Age of Fishes
Geologic timespan.celestial_body: earth
Geologic timespan.usage: Global (ICS)
Geologic timespan.timescales_used: ICS Time Scale
Geologic timespan.chrono_unit: Period
Geologic timespan.strat_unit: System
Geologic timespan.timespan_formality: Formal
Geologic timespan.lower_boundary_def: FAD of the Graptolite Uncinatograptus uniformis

via Wikipedia infobox

Wikidata facts

Image: Mollweide Paleographic Map of Earth, 390 Ma (Eifelian Age).png

Show 6 more facts

Commons category: Devonian
start time: 419200000-
end time: 358900000-
sRGB color hex triplet: CB8C37
IPA transcription: /dəˈvoʊni.ən/
P8168: Turati

Sources (4)

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~31 min read

Article

23 sections

Contents

History
Subdivisions
Early Devonian
Middle Devonian
Late Devonian
Climate
Paleogeography
Laurussia
Gondwana
Asian terranes
Closure of the Rheic Ocean
Life
Marine biota
Reefs
Terrestrial biota
The greening of land
Animals and the first soils
Gallery
Late Devonian extinction
See also
Notes
References
External links

The first significant evolutionary radiation of life on land occurred during the Devonian, as free-sporing land plants (pteridophytes) began to spread across dry land, forming extensive coal forests which covered the continents. By the middle of the Devonian, several groups of vascular plants had evolved leaves and true roots, and by the end of the period the first seed-bearing plants (pteridospermatophytes) appeared. This rapid evolution and colonization process, which had begun during the Silurian, is known as the Silurian-Devonian Terrestrial Revolution. The earliest land animals, predominantly arthropods such as myriapods, arachnids and hexapods, also became well-established early in this period, after beginning their colonization of land at least from the Ordovician Period.