Bashkirian

EtymologyName formalityFormalUsage informationCelestial bodyEarthRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitAgeStratigraphic unitStageTime span formalityFormalLower boundary definitionFAD of the ConodontDeclinognathodus nodiliferusLower boundary GSSP, Nevada, USA
36°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, China

The Bashkirian is, in the International Commission on Stratigraphygeologic timescale, the lowest stage or oldest age of the Pennsylvanian. The Bashkirian age lasted from 323.4 to 315.2 , is preceded by the Serpukhovian and is followed by the Moscovian.

The Bashkirian overlaps with the upper part of the Namurian and lower part of the Westphalian stages from regional European stratigraphy. It also overlaps with the North American Morrowan and Atokan stages and the Chinese Luosuan and lower Huashibanian stages.