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The Langhian is, in the ICS geologic timescale, an age or stage in the middle Miocene Epoch/Series. It spans the time between 15.97 ± 0.05 annum and 13.65 ± 0.05 Ma (million years ago) during the Middle Miocene.GeoWhen (2007)
The Langhian was a continuing warming periodEdward Petuch, Ph.D. Florida Atlantic University, Department of Geosciences., Author, Cenozoic Seas: The View From Eastern North America. defined by Lorenzo Pareto in 1865, it was originally established in the Langhe area north of Ceva in northern Italy, hence the name. The Langhian is preceded by the Burdigalian and followed by the Serravallian Stage.
The top of the Langhian Stage (the base of the Serravallian Stage) is at the first occurrence of fossils of the nanoplankton species Sphenolithus heteromorphus and is located in magnetic chronozone C5ABr.
The Langhian is coeval with the Orleanian and Astaracian European Land Mammal Mega Zones (more precisely: with MN5 and MN6, MN6 starts just below the Langhian-Serravallian boundaryPalaeos (2003)), with the upper Hemingfordian to mid-Barstovian North American Land Mammal Ages, with mid-Relizian to Luisian regional stages (the Luisian extends barely into the early Serravallian), with the early-mid Badenian Paratethys stage of Central and eastern Europe, with the Tozawan stage in Japan (which runs barely into the early Serravallian), with the late Batesfordian through Balcombian to early Bairnsdalian stages and with the mid-Cliffdenian to mid-Lillburnian New Zealand stages.
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