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Rancho Viejo Beds, Guanajuato, Mexico

FormationRancho Viejo Beds
Age:4.90 - 1.80 Ma
Cenozoic
IntervalMiocene
Lithologyclaystone/sandstone, claystone/ash, claystone
Number of Collections13
Number of Occurrences100

Recorded Sample Locations

LocationRegionStratigraphic Name
Arroyo TepalcatesSan Miguel de Allende Municipality, Guanajuato, MexicoRancho Viejo Beds
Rancho El Ocote San Miguel de Allende Municipality, Guanajuato, MexicoRancho Viejo Beds
El CarrizalDolores Hidalgo Municipality, Guanajuato, MexicoRancho Viejo Beds
La RinconadaDolores Hidalgo Municipality, Guanajuato, MexicoRancho Viejo Beds
Rancho ViejoSan Miguel de Allende Municipality, Guanajuato, MexicoRancho Viejo Beds

Associated Units

Stratigraphic NameAgeLithologyOccurrence Records
Gracias23.0 - 5.33 Ma
Miocene
28

Recorded Fossils

Accepted NameHierarchyAge
Capromeryx tauntonensis
species
7Animalia : Chordata : Mammalia : Artiodactyla : Antilocapridae : Capromeryx : Capromeryx tauntonensis4.9 - 1.8 Ma
Cenozoic
Hexobelomeryx fricki
species
7Animalia : Chordata : Mammalia : Artiodactyla : Antilocapridae : Hexobelomeryx : Hexobelomeryx fricki10.3 - 4.9 Ma
Neogene
Alforjas sp.
genus
6Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : Alforjas10.3 - 4.9 Ma
Neogene
Blancocamelus meadei
species
7Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : Blancocamelus : Blancocamelus meadei4.9 - 1.8 Ma
Cenozoic
Camelops sp.
genus
6Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : Camelops4.9 - 1.8 Ma
Cenozoic
Hemiauchenia gracilis
species
7Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : Hemiauchenia : Hemiauchenia gracilis4.9 - 1.8 Ma
Cenozoic
Palaeolama guanajuatensis
species
7Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : Hemiauchenia : Palaeolama guanajuatensis10.3 - 4.9 Ma
Neogene
Hemiauchenia macrocephala
species
7Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : Hemiauchenia : Hemiauchenia macrocephala4.9 - 1.8 Ma
Cenozoic
Megatylopus sp.
genus
6Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : Megatylopus10.3 - 4.9 Ma
Neogene
Megatylopus matthewi
species
7Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : Megatylopus : Megatylopus matthewi10.3 - 4.9 Ma
Neogene
Pleiolama vera
species
7Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : Pleiolama : Pleiolama vera10.3 - 4.9 Ma
Neogene
Platygonus sp.
genus
6Animalia : Chordata : Mammalia : Artiodactyla : Tayassuidae : Platygonus10.3 - 4.9 Ma
Neogene
Protherohyus brachydontus
species
7Animalia : Chordata : Mammalia : Artiodactyla : Tayassuidae : Protherohyus : Protherohyus brachydontus10.3 - 4.9 Ma
Neogene
Tayassuinae
subfamily
5.3Animalia : Chordata : Mammalia : Artiodactyla : Tayassuidae : Tayassuinae10.3 - 4.9 Ma
Neogene
Borophagus diversidens
species
7Animalia : Chordata : Mammalia : Carnivora : Canidae : Borophagus : Borophagus diversidens4.9 - 1.8 Ma
Cenozoic
Borophagus secundus
species
7Animalia : Chordata : Mammalia : Carnivora : Canidae : Borophagus : Borophagus secundus10.3 - 4.9 Ma
Neogene
Canis ferox
species
7Animalia : Chordata : Mammalia : Carnivora : Canidae : Canis : Canis ferox10.3 - 4.9 Ma
Neogene
Machairodus coloradensis
species
7Animalia : Chordata : Mammalia : Carnivora : Felidae : Amphimachairodus : Machairodus coloradensis23.03 - 5.333 Ma
Miocene
Machairodus sp.
genus
6Animalia : Chordata : Mammalia : Carnivora : Felidae : Machairodus4.9 - 1.8 Ma
Cenozoic
Miracinonyx studeri
species
7Animalia : Chordata : Mammalia : Carnivora : Felidae : Miracinonyx : Miracinonyx studeri4.9 - 1.8 Ma
Cenozoic
Felis intrepidus
species
7Animalia : Chordata : Mammalia : Carnivora : Felidae : Pseudaelurus : Felis intrepidus10.3 - 4.9 Ma
Neogene
Mustelidae
family
5Animalia : Chordata : Mammalia : Carnivora : Mustelidae4.9 - 1.8 Ma
Cenozoic
Agriotherium schneideri
species
7Animalia : Chordata : Mammalia : Carnivora : Ursidae : Agriotherium : Agriotherium schneideri10.3 - 4.9 Ma
Neogene
Ursidae
family
5Animalia : Chordata : Mammalia : Carnivora : Ursidae4.9 - 1.8 Ma
Cenozoic
Plaina sp.
genus
6Animalia : Chordata : Mammalia : Cingulata : Pampatheriidae : Plaina4.9 - 1.8 Ma
Cenozoic
? no name ?
1004.9 - 1.8 Ma
Cenozoic
Hypolagus ringoldensis
species
7Animalia : Chordata : Mammalia : Lagomorpha : Leporidae : Hypolagus : Hypolagus ringoldensis10.3 - 4.9 Ma
Neogene
Notolagus velox
species
7Animalia : Chordata : Mammalia : Lagomorpha : Leporidae : Notolagus : Notolagus velox10.3 - 4.9 Ma
Neogene
Paranotolagus complicatus
species
7Animalia : Chordata : Mammalia : Lagomorpha : Leporidae : Paranotolagus : Paranotolagus complicatus4.9 - 1.8 Ma
Cenozoic
Hypolagus mexicanus
species
7Animalia : Chordata : Mammalia : Lagomorpha : Leporidae : Pewelagus : Hypolagus mexicanus4.9 - 1.8 Ma
Cenozoic
Astrohippus stockii
species
7Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Astrohippus : Astrohippus stockii10.3 - 4.9 Ma
Neogene
Dinohippus mexicanus
species
7Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Dinohippus : Dinohippus mexicanus10.3 - 4.9 Ma
Neogene
Equus sp.
genus
6Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Equus4.9 - 1.8 Ma
Cenozoic
Equus (Dolichohippus) simplicidens
species
7Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Equus : Equus (Dolichohippus) simplicidens4.9 - 1.8 Ma
Cenozoic
Nannippus aztecus
species
7Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Nannippus : Nannippus aztecus10.3 - 4.9 Ma
Neogene
Nannippus peninsulatus
species
7Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Nannippus : Nannippus peninsulatus4.9 - 1.8 Ma
Cenozoic
Equus eurystylus
species
7Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Neohipparion : Equus eurystylus10.3 - 4.9 Ma
Neogene
Teleoceras sp.
genus
6Animalia : Chordata : Mammalia : Perissodactyla : Rhinocerotidae : Teleoceras10.3 - 4.9 Ma
Neogene
Teleoceras hicksi
species
7Animalia : Chordata : Mammalia : Perissodactyla : Rhinocerotidae : Teleoceras : Teleoceras hicksi10.3 - 4.9 Ma
Neogene
Gomphotheriidae
family
5Animalia : Chordata : Mammalia : Proboscidea : Gomphotheriidae4.9 - 1.8 Ma
Cenozoic
Rhynchotherium sp.
genus
6Animalia : Chordata : Mammalia : Proboscidea : Gomphotheriidae : Rhynchotherium10.3 - 4.9 Ma
Neogene
Stegomastodon sp.
genus
6Animalia : Chordata : Mammalia : Proboscidea : Gomphotheriidae : Stegomastodon10.3 - 4.9 Ma
Neogene
Neochoerus sp.
genus
6Animalia : Chordata : Mammalia : Rodentia : Hydrochoeridae : Neochoerus4.9 - 1.8 Ma
Cenozoic
Baiomys kolbi
species
7Animalia : Chordata : Mammalia : Rodentia : Cricetidae : Baiomys : Baiomys kolbi10.3 - 4.9 Ma
Neogene
Calomys (Bensonomys) baskini
species
7Animalia : Chordata : Mammalia : Rodentia : Cricetidae : Bensonomys : Calomys (Bensonomys) baskini10.3 - 4.9 Ma
Neogene
Calomys (Bensonomys) elachys
species
7Animalia : Chordata : Mammalia : Rodentia : Cricetidae : Bensonomys : Calomys (Bensonomys) elachys10.3 - 4.9 Ma
Neogene
Calomys (Bensonomys) winklerorum
species
7Animalia : Chordata : Mammalia : Rodentia : Cricetidae : Bensonomys : Calomys (Bensonomys) winklerorum10.3 - 4.9 Ma
Neogene
Cricetidae
family
5Animalia : Chordata : Mammalia : Rodentia : Cricetidae10.3 - 4.9 Ma
Neogene
Neotoma (Paraneotoma) sp.
subgenus
6.3Animalia : Chordata : Mammalia : Rodentia : Cricetidae : Neotoma : Neotoma (Paraneotoma)10.3 - 4.9 Ma
Neogene
Neotoma (Paraneotoma) sawrockensis
species
7Animalia : Chordata : Mammalia : Rodentia : Cricetidae : Neotoma : Neotoma (Paraneotoma) sawrockensis10.3 - 4.9 Ma
Neogene
Prosigmodon chihuahuensis
species
7Animalia : Chordata : Mammalia : Rodentia : Muridae : Prosigmodon : Prosigmodon chihuahuensis10.3 - 4.9 Ma
Neogene
Prosigmodon ferrusquiai
species
7Animalia : Chordata : Mammalia : Rodentia : Muridae : Prosigmodon : Prosigmodon ferrusquiai10.3 - 4.9 Ma
Neogene
Prosigmodon oroscoi
species
7Animalia : Chordata : Mammalia : Rodentia : Muridae : Prosigmodon : Prosigmodon oroscoi10.3 - 4.9 Ma
Neogene
Phugatherium dichroplax
species
7Animalia : Chordata : Mammalia : Rodentia : Hydrochoeridae : Phugatherium : Phugatherium dichroplax4.9 - 1.8 Ma
Cenozoic
Paenemarmota sp.
genus
6Animalia : Chordata : Mammalia : Rodentia : Sciuridae : Paenemarmota10.3 - 4.9 Ma
Neogene
Spermophilus sp.
genus
6Animalia : Chordata : Mammalia : Rodentia : Sciuridae : Spermophilus4.9 - 1.8 Ma
Cenozoic
Citellus matachicensis
species
7Animalia : Chordata : Mammalia : Rodentia : Sciuridae : Spermophilus : Citellus matachicensis4.9 - 1.8 Ma
Cenozoic
Glyptotherium sp.
genus
6Animalia : Chordata : Mammalia : Cingulata : Glyptodontidae : Glyptotherium4.9 - 1.8 Ma
Cenozoic
Glyptotherium texanum
species
7Animalia : Chordata : Mammalia : Xenarthra : Glyptodontidae : Glyptotherium : Glyptotherium texanum4.9 - 1.8 Ma
Cenozoic
Megalonyx sp.
genus
6Animalia : Chordata : Mammalia : Pilosa : Megalonychidae : Megalonyx10.3 - 4.9 Ma
Neogene
Glossotherium sp.
genus
6Animalia : Chordata : Mammalia : Xenarthra : Mylodontidae : Glossotherium10.3 - 4.9 Ma
Neogene
Glossotherium garbanii
species
7Animalia : Chordata : Mammalia : Pilosa : Mylodontidae : Glossotherium : Glossotherium garbanii4.9 - 1.8 Ma
Cenozoic
Mylodontidae
family
5Animalia : Chordata : Mammalia : Pilosa : Mylodontidae10.3 - 4.9 Ma
Neogene
Rana sp.
genus
6Animalia : Chordata : Amphibia : Anura : Ranidae : Rana4.9 - 1.8 Ma
Cenozoic

References

Mooser O. (1958) Una zebra fosil de la Mesa Central de Mexico, Universidad Nacional Autónoma de México, Instituto de Biología, Anales 28, 359-363
Mooser O. (1959) Un equido fosil del genero Neohipparion de la Mesa Central de Mexico, Universidad Nacional Autónoma de México, Instituto de Biología, Anales 30, 375-388
Mooser O. (1963) Neohipparion monias n. sp. equido fosil del Plioceno de la Mesa Central de Mexico, Universidad Nacional Autónoma de México, Instituto de Biología, Anales 34, 393-396
Mooser O. (1964) Una Nueva Especie De Equido Del Genero Protohippus Del Plioceno Medio De La Mesa Central De Mexico, Universidad Nacional Autónoma de México, Instituto de Biología, Anales 35, 157-158
Dalquest W. W., Mooser O. (1980) Arctodus pristinus Leidy in the Pleistocene of Aguascalientes, Mexico, Journal of Mammalogy 61 4, 724-725
Dalquest W. W., Mooser O. (1980) Late Hemphillian mammals of the Ocote local fauna, Guanajuato, Mexico, Pearce-Sellards Series 32, 1-25
Miller W. E., Carranza-Castaneda O. (1984) Late Cenozoic Mammals from Central Mexico, Journal of Vertebrate Paleontology 4 2, 216-236
Carranza-Castaneda O., Miller W. E. (1988) , Univ Nat Auton Mexico Inst Geol Revista 7 2
White J. A. (1988) The Archaeolaginae (Mammalia, Lagomorpha) of North America, Excluding Archaeolagus and Panolax, Journal of Vertebrate Paleontology 7 4, 425-450
Carranza-Castaneda O. (1989) Rinocerontes de la fauna local Rancho el Ocote, Mioceno Tardio (Hemfiliano tardio) de estado de Guanajuato, Universidad Nacional Autónoma de México, Instituto de Geológia, Revista, Publicación Especial 8 1, 88-99
Montellano M. (1989) Pliocene Camelidae of Rancho El Ocote, central Mexico, Journal of Mammalogy 70 2, 359-369
White J. A. (1991) North American Leporinae (Mammalia: Lagomorpha) from late Miocene (Clarendonian) to latest Pliocene (Blancan), Journal of Vertebrate Paleontology 11 1, 67-89
Carranza-Castañeda O., Walton A. H. (1992) Cricetid rodents from the Rancho El Ocote fauna, late Hemphillian (Pliocene), State of Guanajuato, Universidad Nacional Autónoma de México, Instituto de Geologia, Revista 10 1, 71-93
Carranza-Castaneda O. (1992) Una nueva localidad del henfiliano tardio en la mesa central de Mexico, Revista Mexicana de Ciencias Geologicas 10 2, 179-196
Carranza-Castaneda O., Miller W. E. (1996) Hemphillian and Blancan felids from central Mexico, Journal of Paleontology 70 3, 509-518
Miller W. E., Carranza-Castaneda O. (1998) Late Tertiary Canids from Central Mexico, Journal of Paleontology 72 3, 546-556 doi:10.1017/S002233600002432X
Prothero D. R. (1998) Rhinocerotidae, Evolution of Tertiary mammals of North America, 595-605
Carranza-Castaneda O., Miller W. E., et al (2000) Recent discoveries of South America immigrants in faunas from central Mexico with radiometric dates, Journal of Vertebrate Paleontology 20 3, 34A
Carranza-Castaneda O., Miller W. E. (2001) Machairodus, recorded in the Blancan of Guanajuato, Mexico, Journal of Vertebrate Paleontology 21 3, 38A
Alroy J. (2002) Synonymies and reidentifications of North American fossil mammals
Jimenez-Hidalgo E., Carranza-Castaneda O. (2002) First Pliocene record of Hemiauchenia blancoensis (Mammalia, Camelidae) in Mexico, Journal of Vertebrate Paleontology 22 3, 71A-72A
MacFadden B. J., Carranza-Castafieda O. (2002) Cranium of Dinohippus mexicanus (Mammalia: Equidae) from the Early Pliocene (Latest Hemphillian) of Central Mexico, and the origin of Equus, Bulletin of the Florida Museum of Natural History 43 5, 163-185
Jimenez-Hidalgo E., Carranza-Castaneda O., et al (2004) A Pliocene record of Capromeryx (Mammalia: Antilocapridae) in Mexico, Journal of Paleontology 78 6, 1179-1186
Flynn J. J., Kowallis B. J., et al (2005) Geochronology of Hemphillian-Blancan aged strata, Guanajuato, Mexico, and implications for the timing of the Great American Biotic Interchange, Journal of Geology 113, 287-307
Jimenez-Hidalgo E., Carranza-Castaneda O. (2010) Blancan Camelids From San Miguel De Allende, Guanajuato, Central Mexico, Journal of Paleontology 84 1, 51-65 doi:10.1666/08-154.1
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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