Bathonian

EtymologyName formalityFormalUsage informationCelestial bodyEarthRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitAgeStratigraphic unitStageTime span formalityFormalLower boundary definitionFAD of the AmmoniteLower boundary GSSP, , Alpes-de-Haute-Provence, France
43°57′38″N6°18′55″E / 43.9606°N 6.3153°E / 43.9606; 6.3153Lower GSSP ratifiedJuly 2008Upper boundary definitionFAD of the Ammonite genus KeppleritesUpper boundary GSSP candidate section(s)

• Pfeffingen, Swabian Alb, Germany
• Russia

In the geologic timescale the Bathonian is an age and stage of the Middle Jurassic. It lasted from approximately 168.2 ±1.2 Ma to around 165.3 ±1.1 Ma (million years ago). The Bathonian Age succeeds the Bajocian Age and precedes the Callovian Age.