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 the
Mayoan The Mayoan ( es, Mayoense) age is a period of geologic time from 11.8 to 10 Ma, within the Middle to Late Miocene epoch of the Neogene, used more specifically within the SALMA classification in South America. It follows the Laventan and precedes ...
age.
[Paleo Database: Laventan]
/ref>[Madden et al., 1997]
Etymology
The age is named after the Miocene Lagerstätte
A Lagerstätte (, from ''Lager'' 'storage, lair' '' Stätte'' 'place'; plural ''Lagerstätten'') is a sedimentary deposit that exhibits extraordinary fossils with exceptional preservation—sometimes including preserved soft tissues. These f ...
La Venta
La Venta is a pre-Columbian archaeological site of the Olmec civilization located in the present-day Mexican state of Tabasco. Some of the artifacts have been moved to the museum "Parque - Museo de La Venta", which is in nearby Villahermosa, t ...
, where a rich biodiversity
Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') l ...
from the Middle Miocene has been recovered from the Honda Group.[
]
Formations
Fossil content
Correlations
The Laventan (13.8 to 11.8 Ma) correlates with:
* NALMA
The North American land mammal ages (NALMA) establishes a geologic timescale for North American fauna beginning during the Late Cretaceous and continuing through to the present. These periods are referred to as ages or intervals (or stages when re ...
** latest Barstovian
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 . It is usu ...
(15.97-13.65 Ma)[Barstovian]
at Fossilworks.org
** early 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 ...
(13.65-10.3 Ma)[Clarendonian]
at Fossilworks.org
* Californian ages
** Luisian (15.5-13.5 Ma)
* 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
* CPS[Central Paratethys Stages]
at Fossilworks.org
** Badenian (13.65-12.7 Ma)[Badenian]
at Fossilworks.org
** Sarmatian
The Sarmatians (; grc, Σαρμαται, Sarmatai; Latin: ) were a large confederation of ancient Eastern Iranian equestrian nomadic peoples of classical antiquity who dominated the Pontic steppe from about the 3rd century BC to the 4th cen ...
(12.7-11.608 Ma)
Sarmatian] at Fossilworks.org[Southland epoch]
at Fossilworks.org
** 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 ...
(15.1-12.98 Ma)[Lillburnian]
at Fossilworks.org
** early Waiauan (12.98-10.92 Ma)[Waiauan]
at Fossilworks.org
* Australian ages
** Bairnsdalian (15.0-10.5 Ma)
* Japanese ages
** Tozawan (15.97-13.5 Ma)
* NMAC - Tunggurian (13.65-11.1 Ma)[Tunggurian]
at Fossilworks.org
References
Bibliography
;Laventan
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;Honda Group, Colombia
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;Honda Group, Bolivia
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;Aisol Formation
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;Bahía Inglesa Formation
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;Capadare Formation
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;Choquecota and Mauri Formations
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;Cura-Mallín Group
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;Gran Bajo del Gualicho Formation
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;Ipururo Formation
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;Paraná Formation
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;Pebas Formation
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;Pisco Formation
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;Santa Inés Formation
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;Sincelejo Formation
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;Socorro and Urumaco Formations
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Further reading
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{{SALMA
Miocene South America
Neogene Colombia