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Fray Bentos

Formation	Fray Bentos
Age:	29.0 - 21.0 Ma Cenozoic
Interval	Deseadan
Lithology	sandstone
Number of Collections	11
Number of Occurrences	39

Recorded Sample Locations

Location	Region	Stratigraphic Name
Paso del Cuello	Florida Department, Uruguay	Fray Bentos
Rancho Verde	Florida Department, Uruguay	Fray Bentos
Picada Berget	Canelones Department, Uruguay	Fray Bentos
Playa de la Agraciada	Soriano Department, Uruguay	Fray Bentos
Palmirense	Soriano Department, Uruguay	Fray Bentos
Arroyo Castillo	Curuzú Cuatiá Department, Corrientes Province, Argentina	Fray Bentos
Arroyo Maria Grande	Curuzú Cuatiá Department, Corrientes Province, Argentina	Fray Bentos
Chajari	Federación Department, Entre Ríos Province, Argentina	Fray Bentos
Arroyo Avalos	Sauce Department, Corrientes Province, Argentina	Fray Bentos
Rio Corrientes	Curuzú Cuatiá Department, Corrientes Province, Argentina	Fray Bentos

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Libertad	0.13 - 0.01 Ma Pleistocene		5

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Devincenzia gallinali species	7	Animalia : Chordata : Aves : Phorusrhacidae : Devincenzia : *Devincenzia gallinali*	29 - 21 Ma Cenozoic
Uruguaytherium beaulieui species	7	Animalia : Chordata : Mammalia : Astrapotheriidae : Uruguaytherium : *Uruguaytherium beaulieui*	29 - 21 Ma Cenozoic
Dasypodidae family	5	Animalia : Chordata : Mammalia : Cingulata : Dasypodidae	29 - 21 Ma Cenozoic
Dasypodon sp. genus	6	Animalia : Chordata : Mammalia : Cingulata : Dasypodidae : *Dasypodon*	29 - 21 Ma Cenozoic
Doellotatus sp. genus	6	Animalia : Chordata : Mammalia : Cingulata : Dasypodidae : *Doellotatus*	29 - 21 Ma Cenozoic
Euphractini tribe	5.5	Animalia : Chordata : Mammalia : Cingulata : Dasypodidae : Euphractini	29 - 21 Ma Cenozoic
Machlydotherium sp. genus	6	Animalia : Chordata : Mammalia : Cingulata : Pampatheriidae : *Machlydotherium*	29 - 21 Ma Cenozoic
Vassallia sp. genus	6	Animalia : Chordata : Mammalia : Cingulata : Pampatheriidae : *Vassallia*	29 - 21 Ma Cenozoic
Proterotherium sp. genus	6	Animalia : Chordata : Mammalia : Litopterna : Proterotheriidae : *Proterotherium*	29 - 21 Ma Cenozoic
Archaeohyracidae family	5	Animalia : Chordata : Mammalia : Archaeohyracidae	29 - 21 Ma Cenozoic
Hegetotherium sp. genus	6	Animalia : Chordata : Mammalia : Hegetotheriidae : *Hegetotherium*	29 - 21 Ma Cenozoic
Prohegetotherium sp. genus	6	Animalia : Chordata : Mammalia : Notoungulata : Hegetotheriidae : *Prohegetotherium*	29 - 21 Ma Cenozoic
Prohegetotherium schiaffinoi species	7	Animalia : Chordata : Mammalia : Notoungulata : Hegetotheriidae : Prohegetotherium : *Prohegetotherium schiaffinoi*	29 - 21 Ma Cenozoic
Pseudohegetotherium sp. genus	6	Animalia : Chordata : Mammalia : Hegetotheriidae : *Pseudohegetotherium*	29 - 21 Ma Cenozoic
Argyrohyrax sp. genus	6	Animalia : Chordata : Mammalia : Interatheriidae : *Argyrohyrax*	29 - 21 Ma Cenozoic
Eopachyrucos ranchoverdensis species	7	Animalia : Chordata : Mammalia : Hegetotheriidae : Eopachyrucos : *Eopachyrucos ranchoverdensis*	29 - 21 Ma Cenozoic
Fiandraia sp. genus	6	Animalia : Chordata : Mammalia : Interatheriidae : *Fiandraia*	29 - 21 Ma Cenozoic
Interatheriinae subfamily	5.3	Animalia : Chordata : Mammalia : Notoungulata : Interatheriidae : Interatheriinae	29 - 21 Ma Cenozoic
Leontiniidae family	5	Animalia : Chordata : Mammalia : Leontiniidae	29 - 21 Ma Cenozoic
Scarrittia robusta species	7	Animalia : Chordata : Mammalia : Leontiniidae : Scarrittia : *Scarrittia robusta*	29 - 21 Ma Cenozoic
Trachytheriinae subfamily	5.3	Animalia : Chordata : Mammalia : Notoungulata : Mesotheriidae : Trachytheriinae	29 - 21 Ma Cenozoic
Trachytherus spegazzinianus species	7	Animalia : Chordata : Mammalia : Notoungulata : Mesotheriidae : Trachytherus : *Trachytherus spegazzinianus*	29 - 21 Ma Cenozoic
Protypotherium sp. genus	6	Animalia : Chordata : Mammalia : Notoungulata : Protypotheriidae : *Protypotherium*	29 - 21 Ma Cenozoic
Cephalomyopsis sp. genus	6	Animalia : Chordata : Mammalia : Rodentia : Dasyproctidae : *Cephalomyopsis*	29 - 21 Ma Cenozoic
Eoviscaccia sp. genus	6	Animalia : Chordata : Mammalia : Rodentia : Chinchillidae : *Eoviscaccia*	29 - 21 Ma Cenozoic
Caviomorpha unranked clade	99	Animalia : Chordata : Mammalia : Rodentia : Caviomorpha	29 - 21 Ma Cenozoic
Proborhyaena gigantea species	7	Animalia : Chordata : Mammalia : Borhyaenidae : Proborhyaena : *Proborhyaena gigantea*	29 - 21 Ma Cenozoic
Glyptatelinae subfamily	5.3	Animalia : Chordata : Mammalia : Xenarthra : Glyptodontidae : Glyptatelinae	29 - 21 Ma Cenozoic
Palaeopeltis inornatus species	7	Animalia : Chordata : Mammalia : Cingulata : Palaeopeltidae : Palaeopeltis : *Palaeopeltis inornatus*	29 - 21 Ma Cenozoic
Pseudoplohophorus sp. genus	6	Animalia : Chordata : Mammalia : Xenarthra : *Pseudoplohophorus*	29 - 21 Ma Cenozoic
Urotherium interundatum species	7	Animalia : Chordata : Mammalia : Cingulata : Glyptodontidae : Urotherium : *Urotherium interundatum*	29 - 21 Ma Cenozoic
Scelidodon sp. genus	6	Animalia : Chordata : Mammalia : Pilosa : Mylodontidae : *Scelidodon*	29 - 21 Ma Cenozoic
Testudinidae family	5	Animalia : Chordata : Reptilia : Testudines : Testudinidae	29 - 21 Ma Cenozoic

References

Mones A., Ubilla M. (1978) La Edad Deseadense (Oligoceno inferior) de la Formación Fray Bentos y su contenido paleontológico, con especial referencia a la presencia de Proborhyaena cf. gigantea Ameghino (Marsupialia: Borhyaenidae) en el Uruguay. Nota preliminar, Comunicaciones Paleontológicas del Museo de Historia Natural de Montevideo 7 1, 151-158

Ubilla M., Perea D., et al (1994) The Deseadan Land Mammal Age in Uruguay and the report of Scarrittia robusta nov. sp. (Leontiniidae, Notoungulata) in the Fray Bentos Formation (Oligocene - ? Lower Miocene), Geobios 27 1, 95-102

Bond M., López G., et al (1998) Los mamíferos de la Formación Fray Bentos (Edad Mamífero Deseadense, Oligoceno superior?) de las provincias de Corrientes y Entre Ríos, Argentina, Asociación Paleontológica Argentina, Publicación Especial 5, 41-50

Reguero M. A., Ubilla M., et al (2003) A new species of Eopachyrucos (Mammalia, Notoungulata, Interatheriidae) from the Late Oligocene of Uruguay, Journal of Vertebrate Paleontology 23 2, 445-457 doi:10.1671/0272-4634(2003)023[0445:ANSOEM]2.0.CO;2

Reguero M. A., Cerdeño E. (2005) New late Oligocene Hegetotheriidae (Mammalia, Notoungulata) from Salla, Bolivia, Journal of Vertebrate Paleontology 25 3, 674-684

Billet G., Muizon C., et al (2008) Late Oligocene mesotheriids (Mammalia, Notoungulata) from Salla and Lacayani (Bolivia): implications for basal mesotheriid phylogeny and distribution, Zoological Journal of the Linnean Society 152, 153-200

Perea D., Toriño P., et al (2014) La presencia del Xenartro Palaeopeltis inornatus Ameghino, 1894, en la Formación Fray Bentos (Oligoceno Tardío), Uruguay, Ameghiniana 51 3, 254-258 doi:10.5710/AMGH.18.03.2014.1861

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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