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Bashkirian

Subdivision of the Carboniferous according to the ICS, as of 2024.Vertical axis scale: Millions of years agoEtymologyName formalityFormalUsage informationCelestial bodyEarthRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitAgeStratigraphic unitStageTime span formalityFormalLower boundary definitionFAD of the ConodontDeclinognathodus nodiliferusLower boundary GSSP, Nevada, USA36°44′00″N114°46′40″W / 36.7333°N 114.7778°W / 36.7333; -114.7778Lower GSSP ratified1996Upper boundary definitionNot formally definedUpper boundary definition candidatesFAD of the ConodontIdiognathoides postsulcatus or Declinognathodus donetzianusUpper boundary GSSP candidate section(s)Southern Ural Mountains, Luodian County, Guizhou, ChinaThe Bashkirian is, in the International Commission on Stratigraphygeologic timescale, the lowest stage or oldest age of the Pennsylvanian.

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