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Early Devonian

The Early Devonian is the first of three epochs comprising the Devonian period, corresponding to the Lower Devonian series. It lasted from 419.62 ± 1.36 to 393.47 ± 0.99 and began with the Lochkovian Stage 419.62 ± 1.36 to 413.02 ± 0.99, which was followed by the Pragian from 413.02 ± 1.36 to 410.62 ± 0.99 and then by the Emsian, which lasted until the…

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EpochsDevonianSeriesLochkovianPragian
15 related topics

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Celestial body
Earth
Chronological unit
Epoch
Chronostratigraphic name
Lower Devonian
Geochronological name
Early Devonian
Lower boundary definition
FAD of the graptolite Monograptus uniformis
Lower GSSP ratified
1972

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Early Devonian

Nodes17
Edges16
Triples16
Avg. degree1.88
Density0.117647
Components1

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Early Devonian

Top relations

Celestial body · 1
Early Devonian → Earth
Chronological unit · 1
Early Devonian → Epoch
Chronostratigraphic name · 1
Early Devonian → Lower Devonian
Geochronological name · 1
Early Devonian → Early Devonian
Lower boundary definition · 1
Early Devonian → FAD of the graptolite Monograptus uniformis
Lower boundary GSSP · 1
Early Devonian → Klonk, Czech Republic .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .ge…
Lower GSSP ratified · 1
Early Devonian → 1972
Name formality · 1
Early Devonian → Formal
Regional usage · 1
Early Devonian → Global (ICS)
Stratigraphic unit · 1
Early Devonian → Series

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Important terminology

ammonoids devonian time epochs series lochkovian pragian emsian first period early lower 419 62 36 393 47 99 410 million

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Early DevonianCelestial bodyEarth1.00infobox
Early DevonianChronological unitEpoch1.00infobox
Early DevonianChronostratigraphic nameLower Devonian1.00infobox
Early DevonianGeochronological nameEarly Devonian1.00infobox
Early DevonianLower boundary definitionFAD of the graptolite Monograptus uniformis1.00infobox
Early DevonianLower boundary GSSPKlonk, Czech Republic .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .ge…1.00infobox
Early DevonianLower GSSP ratified19721.00infobox
Early DevonianName formalityFormal1.00infobox
Early DevonianRegional usageGlobal (ICS)1.00infobox
Early DevonianStratigraphic unitSeries1.00infobox
Early DevonianTime scale(s) usedICS Time Scale1.00infobox
Early DevonianTime span formalityFormal1.00infobox
Early DevonianUpper boundary definitionFAD of the conodont Polygnathus costatus partitus1.00infobox
Early DevonianUpper boundary GSSPWetteldorf Richtschnitt section, Wetteldorf, Eifel, Germany 50°08′59″N 6°28′18″E / 50.1496°N 6.4716°E / 50.1496; 6.47161.00infobox
Early DevonianUpper GSSP ratified19851.00infobox
Early Devonianis afirst of three epochs comprising the Devonian period0.90text

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