Laventan

Period of geologic time within the Middle Miocene epoch From Wikipedia, the free encyclopedia

The Laventan (Spanish: 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 age.[1][2]

Etymology

The age is named after the Miocene Lagerstätte La Venta, where a rich biodiversity from the Middle Miocene has been recovered from the Honda Group.[2]

Formations

Laventan is located in South America
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Locations of Laventan formations
More information Formation bold is type, Country ...
Formation
bold is type
Country Basin Notes
Honda Group ColombiaUpper Magdalena Valley
Honda Group BoliviaQuebrada Honda Basin
Aisol Formation ArgentinaSan Rafael Block
Bahía Inglesa Formation ChileCaldera Basin
Capadare Formation VenezuelaFalcón Basin
Choquecota Formation BoliviaAltiplano Basin
Cura-Mallín Group ChileCura-Mallín Basin
Ipururo Formation PeruUcayali Basin
Paraná Formation ArgentinaParaná Basin
Pebas Formation Brazil
 Colombia
 Ecuador
 Peru
Amazon Basin
Pisco Formation PeruPisco Basin
Santa Inés Formation VenezuelaEastern Venezuela Basin
Sincelejo Formation ColombiaSinú-San Jacinto Basin
Socorro Formation VenezuelaFalcón Basin
Urumaco Formation VenezuelaFalcón Basin
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Fossil content

More information Group, Fossils ...
Group Fossils Formation Notes
Mammalslesser bulldog bat (Noctilio albiventris), LaVal's disk-winged bat (Thyroptera lavali), Spix's disk-winged bat (Thyroptera tricolor), Acarechimys minutissimus, Anachlysictis gracilis, Anadasypus hondanus, Aotus dindensis, Boreostemma acostae, B. gigantea, Brievabradys laventensis, Cebupithecia sarmientoi, Dukecynus magnus, Eodolichotis elachys, E. maddeni, Glossotheriopsis pascuali, Granastrapotherium snorki, Hilarcotherium castanedaii, Hondadelphys fieldsi, Hondathentes cazador, Huilabradys magdaleniensis, Huilatherium pluriplicatum, Kiotomops lopezi, Lagonimico conclucatus, Lycopsis longirostrus, Megadolodus molariformis, Micodon kiotensis, Micoureus laventicus, Microscleromys cribiphilus, M. paradoxalis, Microsteiromys jacobsi, Miocallicebus villaviejai, Miocochilius anomopodus, Mohanamico hershkovitzi, Mormopterus colombiensis, Nanoastegotherium prostatum, Neoglyptatelus originalis, Neonematherium flabellatum, Neoreomys huilensis, Neotamandua borealis, Notonycteris magdalenensis, N. sucharadeus, Nuciruptor rubricae, Pachybiotherium minor, Palynephyllum antimaster, Patasola magdalenae, Pedrolypeutes praecursor, Pericotoxodon platignathus, Pitheculites chenche, Potamops mascahehenes, Potamosiren magdalenensis, Prodolichotis guerreroi, P. pridiana, Prolicaphrium sanalfolsensis, Prothoatherium colombianus, Pseudoprepotherium confusum, Rhodanodolichotis antepridiana, R. vucetichae, Ricardomys longidens, Saimiri annectens, S. fieldsi, Scleromys colombianus, S. schurmanni, Scirrotherium hondaensis, Stirtonia tatacoensis, S. victoriae, Thylamys colombianus, Thylamys minutus, Thyroptera robusta, Villarroelia totoyoi, Xenastrapotherium kraglievichi, Cochilius sp., Diclidurus sp., Eumops sp., Hapalops sp., Olenopsis sp., Theosodon sp., ?Steiromys sp., Dolichotinae sp., ?Echimyidae sp., Megalonychidae sp., Megatheriinae sp., Nothrotheriinae sp., Dasypodidae sp., Leontiniidae sp., Proterotheriidae indet., Toxodontidae sp.Honda
Group
Colombia
Acyon myctoderos, Australogale leptognathus, Chimeralestes ambiguus, Guiomys unica, Hapalops angustipalatus, Hemihegetotherium trilobus, Hiskatherium saintandrei, Hondalagus altiplanensis, Lakukullus anatisrostratus, Mesoprocta hypsodus, Miocochilius federicoi, Palaeothentes relictus, P. serratus, Propalaehoplophorus andinus, Quebradahondomys potosiensis, Acarechimys sp., cf. Paratrigodon sp., Prolagostomus sp., cf. Prozaedyus sp., Lagostominae indet., Mesotheriinae indet., Borhyaenidae indet., Caenolestidae indet., Capromyidae indet., Caviidae indet., Chinchillidae indet., Echimyidae indet., Euphractinae indet., Macraucheniidae indet., Octodontidae indet., Proterotheriidae indet., ? Xenastrapotherium indet.Honda
Group
Bolivia
Nesodon taweretus, cf. Astrapotherium sp., cf. Theosodon sp., Lomaphorini indet., Mylodontinae indet., Propalaehoplophorinae indet., Toxodontidae indet.Aisol
Microtypotherium choquecotense, Prozaedyus sp., Chinchillidae indet., Glyptodontidae indet., Hegetotheriidae indet.Choquecota
Heteropsomyinae (aff. Acarechimys) sp., Dasyproctidae (aff. Alloiomys) sp., Prolagostomus sp., Caviomorpha indet., Dasypodidae indet., Typotheria indet.Cura-Mallín
Drytomomys cf. aequatorialis, Granastrapotherium cf. snorki, Miocochilius anomopodus, Neoglyptatelus originalis, Parapropalaehoplophorus septentrionalis, Pericotoxodon cf. platignathus, Potamarchus murinus, cf. Theosodon sp., Acarechimys sp., Boreostemma sp., Megathericulus sp., cf. Tetramerorhinus sp., Urumacotherium sp., Xenastrapotherium sp., Borhyaenoidea indet., Delphinida indet., Glyptodontidae indet., Macraucheniidae indet., Megalonychidae indet., Mylodontidae indet., Octodontoidea indet., Potamarchinae indet., Uruguaytheriinae indet.Ipururo
Pontistes rectifrons, Prionodelphis rovereti, Properiptychus argentinus, Protautoga longidens, cf. Balaenoptera sp., Chrysophrys sp., Dioplotherium sp., Balaenidae indet., Physeteridae indet., Sciaenidae indet., ?Sparidae indet.Paraná
Dinomyidae indet., ? Octodontoidea indet.Pebas
Boreostemma venezolensisSanta Inés
Neoglyptatelus sincelejanusSincelejo
Mirandabradys socorrensis, Megatheriidae indet.Socorro
cf. Olenopsis sp., Mylodontidae indet.Urumaco
BirdsAramus paludigrus, Galbula hylochoreutes, Hoazinoides magdalenaeHonda
Group
Colombia
Psilopteridae indet.Aisol
Pygoscelis calderensis, Spheniscus megaramphus, S. urbinai, Pelagornis sp., aff. Thalassarche sp.Bahía
Inglesa
Pelagornis cf. chilensisCapadare
Reptiles &
amphibians
cane toad (Bufo marinus), Chelus colombiana, Chelonoidis hesterna, Colombophis portai, Dracaena colombiana, ?Eunectes stirtoni, Podocnemis medemi, Gryposuchus colombianus, Langstonia huilensis, Purussaurus neivensis, Balanerodus logimus, Charactosuchus fieldsi, Mourasuchus atopus, Eocaiman sp., Gavialis sp., Sebecus sp., Alligatoridae indet.Honda
Group
Colombia
Crocodylia sp.Aisol
Bairdemys thalassicaCapadare
Barinasuchus arveloiIpururo
Caiman wannlangstoni, Gnatusuchus pebasensis, Gryposuchus pachakamue, Purussaurus neivensis, Kuttanacaiman iquitosensis, Mourasuchus atopus, Paleosuchus sp., Podocnemis sp., Gavialoidea indet.Pebas
Colombophis spinosus, Ikanogavialis gameroi, Caiman sp., Mourasuchus sp., Purussaurus sp., Thecachampsa sp., Alethinophidia indet., Boinae indet.Socorro
Globidentosuchus cf. brachyrostris, Caiman sp., Mourasuchus sp., Purussaurus sp.Urumaco
Fishes &
crustaceans
Colossoma macropomum, Lepidosiren paradoxa, cf. Acanthicus, Arapaima sp., Brachyplatystoma cf. B. vaillanti, Brachyplatystoma promagdalena, Sylviocarcinus piriformis, cf. Corydoras sp., Hoplias sp., cf. Hoplosternum sp., Hydrolycus sp., Phractocephalus hemioliopterus, Serrasalmus sp., Pygocentrus sp., or Pristobrycon sp. (cf. Myletes sp.), Ariidae indet., Characidae cf. Tetragonopterinae, Cichlidae indet., Doradidae indet., Loricariidae indet., Potamotrygonidae indet.Honda
Group
Colombia
Megalodon, Carcharias acutissima, Carcharodon hastalis, Galeocerdo aduncus, Hemipristis serra, Carcharhinus sp., Heterodontus sp., Squalus sp., Squatina sp., Dasyatidae indet., Myliobatoidea indet., Potamotrygonidae indet.Paraná
cf. Hydrolycus sp., Leporinus sp., Potamotrygon sp., Pristis sp., Anostomidae indet.Pebas
Megalodon, Aetobatus arcuatus, Hemipristis serra, Mugil cephalus, Carcharhinus sp., Citharichthys sp., Galeocerdo sp., Rhinoptera sp., Sphyrna sp., Symphurus sp.Socorro
InsectsMacroteleia yaguarum, Sycorax peruensisPebas
FloraAstroniumxylon parabalansae, Piptadenioxylon paraexcelsa, Solanumxylon paranensisParaná
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Correlations

The Laventan (13.8 to 11.8 Ma) correlates with:

More information Formation, Honda ...
Laventan correlations in South America
FormationHondaHondaAisolCura-MallínPiscoIpururoPebasCapadareUrumacoInésParanáMap
BasinVSMHondaSan RafaelCalderaPiscoUcayaliAmazonFalcónVenezuelaParaná
Laventan is located in South America
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Laventan (South America)
Country Colombia Bolivia Argentina Chile Peru Venezuela Argentina
Boreostemma
Hapalops
Miocochilius
Theosodon
Xenastrapotherium
Mylodontidae
Sparassodonta
Primates
Rodents
Birds
Terror birds
Reptiles
megalodon
Flora
Insects
EnvironmentsFluvialFluvio-deltaicFluvio-lacustrineFluvio-deltaicFluvial
Laventan volcanoclastics

Laventan fauna

Laventan flora
VolcanicYes
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References

Further reading

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