The Barstovian North American Stage on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 16,300,000 to 13,600,000 years BP, a period of .Paleobiology Database, Barstovian It is usually considered to overlap the Langhian and Serravallian stages of the Middle Miocene. The Barstovian is preceded by the Hemingfordian and followed by the Clarendonian NALMA stages.
The Barstovian can be further divided into the substages of: late Late Barstovian: Lower boundary source of the base of the Langhian (approximate) early Late Barstovian: Base of the Langhian (approximate) early/lower Barstovian: Upper boundary source: base of Clarendonian (approximate)
Correlations The Barstovian (15.97 to 13.6 Ma) correlates with: SALMA Colloncuran (15.5-13.8 Ma)Colloncuran at Fossilworks.org earliest Laventan (13.8-11.8 Ma)Laventan at Fossilworks.org ELMA - Astaracian (15.97-11.608 Ma)Astaracian at Fossilworks.org Mammal Neogene Units, European Faunal Zones MN 5 zone (15.97-13.65 Ma)MN 5 zone at Fossilworks.org CPSCentral Paratethys Stages at Fossilworks.org earliest Badenian (13.65-12.7 Ma)Badenian at Fossilworks.org New Zealand stratigraphy - Southland epoch (15.9-10.92 Ma)Southland epoch at Fossilworks.org Clifdenian (15.9-13.65 Ma)Clifdenian at Fossilworks.org earliest Lillburnian (13.65-12.7 Ma)Lillburnian at Fossilworks.org NMAC Shanwangian (16.9-13.65 Ma)Shanwangian at Fossilworks.org earliest Tunggurian (13.65-11.1 Ma)Tunggurian at Fossilworks.org
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