The Barstovian North American Stage on the

geologic timescale The geologic time scale, or geological time scale, (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochr ...

is the North American

faunal stage In chronostratigraphy, a stage is a succession of rock strata laid down in a single age on the geologic timescale, which usually represents millions of years of deposition. A given stage of rock and the corresponding age of time will by convent ...

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
/ref> It is usually considered to overlap the

Langhian The Langhian is, in the International Commission on Stratigraphy, ICS geologic timescale, an age (geology), age or stage (stratigraphy), stage in the middle Miocene epoch (geology), Epoch/series (stratigraphy), Series. It spans the time between 15 ...

and

Serravallian The Serravallian is, in the geologic timescale, an age or a stage in the middle Miocene Epoch/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 ...

stages of the Middle Miocene. The Barstovian is preceded by the

Hemingfordian The Hemingfordian on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 20,600,000 to 16,300,000 years BP. It is usually considered to overlap the lates ...

and followed by the

Clarendonian The Clarendonian 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 13,600,000 to 10,300,000 years BP, a period of . It is ...

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 The Laventan ( es, Laventense) age is a period of geologic time (13.8 to 11.8 Ma) within the Middle Miocene epoch of the Neogene, used more specifically within the SALMA classification in South America. It follows the Colloncuran and precedes th ...

(13.8-11.8 Ma)Laventan
at Fossilworks.org * ELMA -

Astaracian The Astaracian age is a period of geologic time (), equivalent with the Middle Miocene and used more specifically with European Land Mammal Ages. It precedes the Vallesian age and follows the Orleanian age. The Astaracian overlaps the Langhian and ...

(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 While also using the international geologic time scale, many nations–especially those with isolated and therefore non-standard prehistories–use their own systems of dividing geologic time into epochs and faunal stages. In New Zealand, these ep ...

(15.9-13.65 Ma)Clifdenian
at Fossilworks.org ** earliest

Lillburnian While also using the international geologic time scale, many nations–especially those with isolated and therefore non-standard prehistories–use their own systems of dividing geologic time into epochs and faunal stages. In New Zealand, these epo ...

(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

References

{{Neogene Footer Miocene life Miocene geochronology Miocene animals of North America Miocene California