Serravallian

Formerly part ofTertiaryPeriod/SystemEtymologyGeochronological nameFormalUsage informationCelestial bodyEarthRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitAgeStratigraphic unitStageTime span formalityFormalLower boundary definitionMi3b Oxygen-isotopic event (Global cooling episode)Lower boundary GSSPRas il Pellegrin section, Fomm ir-Riħ Bay, Malta
35°54′50″N14°20′10″E / 35.9139°N 14.3361°E / 35.9139; 14.3361Lower GSSP ratified2007Upper boundary definitionLAD of the HaptophyteDiscoaster kugleriUpper boundary GSSPMonte dei Corvi Beach section, Ancona, Italy
43°35′12″N13°34′10″E / 43.5867°N 13.5694°E / 43.5867; 13.5694Upper GSSP ratified2003

The Serravallian is, in the geologic timescale, an age or a stage in the middle MioceneEpoch/Series, which spans the time between 13.82 Ma and 11.63 Ma (million years ago). The Serravallian follows the Langhian and is followed by the Tortonian.

It overlaps with the middle of the AstaracianEuropean Land Mammal Mega Zone, the upper Barstovian and lower ClarendonianNorth American Land Mammal Ages and the Laventan and lower MayoanSouth American Land Mammal Ages. It is also coeval with the Sarmatian and upper Stages of the Paratethys time scale of Central and eastern Europe.