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Pennsylvanian (geology)

The Pennsylvanian (/ˌpɛnsəlˈveɪni.ən/ pen-səl-VAYN-i-ən, also known as Upper Carboniferous or Late Carboniferous) is, on the ICS geologic timescale, the younger of two subperiods of the Carboniferous Period (or the upper of two subsystems of the Carboniferous System). It lasted from roughly 323.4 million years ago to 298.9 million years ago. As with most…

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Celestial body
Earth
Chronological unit
Subperiod
Lower boundary definition
First appearance of the Conodont Declinognathodus nodiliferus.
Lower GSSP ratified
1996
Name formality
Formal
Regional usage
Global (ICS)

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Pennsylvanian (geology)

Nodes57
Edges56
Triples12
Avg. degree1.96
Density0.035088
Components1

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Pennsylvanian (geology)

Top relations

Celestial body · 1
Pennsylvanian (geology) → Earth
Chronological unit · 1
Pennsylvanian (geology) → Subperiod
Lower boundary definition · 1
Pennsylvanian (geology) → First appearance of the Conodont Declinognathodus nodiliferus.
Lower boundary GSSP · 1
Pennsylvanian (geology) → Arrow Canyon, Nevada, United States .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-par…
Lower GSSP ratified · 1
Pennsylvanian (geology) → 1996
Name formality · 1
Pennsylvanian (geology) → Formal
Regional usage · 1
Pennsylvanian (geology) → Global (ICS)
Time scale(s) used · 1
Pennsylvanian (geology) → ICS Time Scale
Time span formality · 1
Pennsylvanian (geology) → Formal
Upper boundary definition · 1
Pennsylvanian (geology) → First appearance of the Conodont Streptognathodus isolatus within the morphotype Streptognathodus wabaunsensis chronocline.

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Important terminology

pennsylvanian carboniferous ics period mississippian years collapse upper ago moscovian beds late rainforest geologic early bashkirian kasimovian time conodont permian

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Pennsylvanian (geology)Celestial bodyEarth1.00infobox
Pennsylvanian (geology)Chronological unitSubperiod1.00infobox
Pennsylvanian (geology)Lower boundary definitionFirst appearance of the Conodont Declinognathodus nodiliferus.1.00infobox
Pennsylvanian (geology)Lower boundary GSSPArrow Canyon, Nevada, United States .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-par…1.00infobox
Pennsylvanian (geology)Lower GSSP ratified19961.00infobox
Pennsylvanian (geology)Name formalityFormal1.00infobox
Pennsylvanian (geology)Regional usageGlobal (ICS)1.00infobox
Pennsylvanian (geology)Time scale(s) usedICS Time Scale1.00infobox
Pennsylvanian (geology)Time span formalityFormal1.00infobox
Pennsylvanian (geology)Upper boundary definitionFirst appearance of the Conodont Streptognathodus isolatus within the morphotype Streptognathodus wabaunsensis chronocline.1.00infobox
Pennsylvanian (geology)Upper boundary GSSPAidaralash, Ural Mountains, Kazakhstan 50°14′45″N 57°53′29″E / 50.2458°N 57.8914°E / 50.2458; 57.89141.00infobox
Pennsylvanian (geology)Upper GSSP ratified19961.00infobox

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