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Huerfano, Huerfano County, Colorado, USA

FormationHuerfano
Age:50.3 - 46.2 Ma
Eocene
IntervalWasatchian
Lithologymudstone
Number of Collections17
Number of Occurrences175

Recorded Sample Locations

LocationRegionStratigraphic Name
Dug Springs/Sand ArroyosHuerfano County, Colorado, USAHuerfano
Two miles north of GardnerHuerfano County, Colorado, USAHuerfano

Associated Units

Stratigraphic NameAgeLithologyOccurrence Records
Cuchara55.8 - 50.3 Ma
Eocene
4
Farisita50.3 - 46.2 Ma
Eocene
mudstone10

Recorded Fossils

Accepted NameHierarchyAge
Dissacus leptognathus
species
7Animalia : Chordata : Mammalia : Cetacea : Hapalodectidae : Hapalodectes : Dissacus leptognathus55.8 - 50.3 Ma
Eocene
Mesonyx obtusidens
species
7Animalia : Chordata : Mammalia : Cetacea : Mesonychidae : Mesonyx : Mesonyx obtusidens50.3 - 46.2 Ma
Eocene
Bunophorus sinclairi
species
7Animalia : Chordata : Mammalia : Artiodactyla : Diacodexeidae : Bunophorus : Bunophorus sinclairi55.8 - 50.3 Ma
Eocene
Diacodexis kelleyi
species
7Animalia : Chordata : Mammalia : Artiodactyla : Dichobunidae : Diacodexis : Diacodexis kelleyi55.8 - 50.3 Ma
Eocene
Diacodexis minutus
species
7Animalia : Chordata : Mammalia : Artiodactyla : Dichobunidae : Diacodexis : Diacodexis minutus55.8 - 50.3 Ma
Eocene
Antiacodon pygmaeus
species
7Animalia : Chordata : Mammalia : Artiodactyla : Homacodontidae : Antiacodon : Antiacodon pygmaeus50.3 - 46.2 Ma
Eocene
Miacis parvivorus
species
7Animalia : Chordata : Mammalia : Carnivora : Miacidae : Miacis : Miacis parvivorus50.3 - 46.2 Ma
Eocene
Vulpavus canavus
species
7Animalia : Chordata : Mammalia : Carnivora : Vulpavus : Vulpavus canavus50.3 - 46.2 Ma
Eocene
Coryphodon sp.
genus
6Animalia : Chordata : Mammalia : Coryphodontidae : Coryphodon55.8 - 50.3 Ma
Eocene
Coryphodon armatus
species
7Animalia : Chordata : Mammalia : Cimolesta : Coryphodontidae : Coryphodon : Coryphodon armatus55.8 - 50.3 Ma
Eocene
Hyopsodus paulus
species
7Animalia : Chordata : Mammalia : Condylarthra : Hyopsodontidae : Hyopsodus : Hyopsodus paulus50.3 - 46.2 Ma
Eocene
Hyopsodus walcottianus
species
7Animalia : Chordata : Mammalia : Hyopsodontidae : Hyopsodus : Hyopsodus walcottianus55.8 - 50.3 Ma
Eocene
Hyopsodus wortmani
species
7Animalia : Chordata : Mammalia : Hyopsodontidae : Hyopsodus : Hyopsodus wortmani55.8 - 50.3 Ma
Eocene
Oxyaena lupina
species
7Oxyaenidae : Oxyaena : Oxyaena lupina55.8 - 50.3 Ma
Eocene
Patriofelis ulta
species
7Oxyaenidae : Patriofelis : Patriofelis ulta50.3 - 46.2 Ma
Eocene
Bathyopsis sp.
genus
6Animalia : Chordata : Mammalia : Uintatheriidae : Bathyopsis50.3 - 46.2 Ma
Eocene
Bathyopsis fissidens
species
7Animalia : Chordata : Mammalia : Uintatheriidae : Bathyopsis : Bathyopsis fissidens50.3 - 46.2 Ma
Eocene
Arfia sp.
genus
6Animalia : Chordata : Mammalia : Hyaenodontidae : Arfia50.3 - 46.2 Ma
Eocene
Prototomus strenuus
species
7Animalia : Chordata : Mammalia : Hyaenodontidae : Tritemnodon : Prototomus strenuus50.3 - 46.2 Ma
Eocene
Apatemyidae
family
5Animalia : Chordata : Mammalia : Apatemyidae50.3 - 46.2 Ma
Eocene
Diacodon edenensis
species
7Animalia : Chordata : Mammalia : Dormaaliidae : Scenopagus : Diacodon edenensis50.3 - 46.2 Ma
Eocene
Nyctitherium priscum
species
7Animalia : Chordata : Mammalia : Dormaaliidae : Scenopagus : Nyctitherium priscum50.3 - 46.2 Ma
Eocene
Herpetotheriidae
family
5Animalia : Chordata : Mammalia : Herpetotheriidae50.3 - 46.2 Ma
Eocene
Peratherium comstocki
species
7Animalia : Chordata : Mammalia : Marsupialia : Herpetotheriidae : Peratherium : Peratherium comstocki50.3 - 46.2 Ma
Eocene
? no name ?
10055.8 - 50.3 Ma
Eocene
Palaeictops multicuspis
species
7Animalia : Chordata : Mammalia : Leptictidae : Palaeictops : Palaeictops multicuspis55.8 - 50.3 Ma
Eocene
Oodectes herpestoides
species
7Animalia : Chordata : Mammalia : Carnivora : Miacidae : Oodectes : Oodectes herpestoides50.3 - 46.2 Ma
Eocene
Talpavus sp.
genus
6Animalia : Chordata : Mammalia : Erinaceomorpha : Talpavus55.8 - 50.3 Ma
Eocene
Uintacyon asodes
species
7Animalia : Chordata : Mammalia : Carnivora : Miacidae : Uintacyon : Uintacyon asodes50.3 - 46.2 Ma
Eocene
Nyctitherium velox
species
7Animalia : Chordata : Mammalia : Soricomorpha : Nyctitheriidae : Nyctitherium : Nyctitherium velox50.3 - 46.2 Ma
Eocene
Stylinodon sp.
genus
6Animalia : Chordata : Mammalia : Stylinodontidae : Stylinodon50.3 - 46.2 Ma
Eocene
Stylinodon mirus
species
7Animalia : Chordata : Mammalia : Stylinodontidae : Stylinodon : Stylinodon mirus55.8 - 50.3 Ma
Eocene
Didymictis sp.
genus
6Animalia : Chordata : Mammalia : Carnivora : Viverravidae : Didymictis55.8 - 50.3 Ma
Eocene
Didymictis altidens
species
7Animalia : Chordata : Mammalia : Carnivora : Viverravidae : Didymictis : Didymictis altidens55.8 - 50.3 Ma
Eocene
Didymictis vancleveae
species
7Animalia : Chordata : Mammalia : Carnivora : Viverravidae : Didymictis : Didymictis vancleveae50.3 - 46.2 Ma
Eocene
Viverravus gracilis
species
7Animalia : Chordata : Mammalia : Viverravidae : Viverravus : Viverravus gracilis55.8 - 50.3 Ma
Eocene
Viverravus sicarius
species
7Animalia : Chordata : Mammalia : Carnivora : Viverravidae : Viverravus : Viverravus sicarius50.3 - 46.2 Ma
Eocene
Perissodactyla
order
4Animalia : Chordata : Mammalia : Perissodactyla55.8 - 50.3 Ma
Eocene
Eotitanops borealis
species
7Animalia : Chordata : Mammalia : Perissodactyla : Brontotheriidae : Eotitanops : Eotitanops borealis55.8 - 50.3 Ma
Eocene
Lambdotherium popoagicum
species
7Animalia : Chordata : Mammalia : Perissodactyla : Brontotheriidae : Lambdotherium : Lambdotherium popoagicum55.8 - 50.3 Ma
Eocene
Palaeosyops fontinalis
species
7Animalia : Chordata : Mammalia : Perissodactyla : Brontotheriidae : Palaeosyops : Palaeosyops fontinalis50.3 - 46.2 Ma
Eocene
Eohippus angustidens
species
7Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Eohippus : Eohippus angustidens55.8 - 50.3 Ma
Eocene
Xenicohippus osborni
species
7Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Xenicohippus : Xenicohippus osborni55.8 - 50.3 Ma
Eocene
Hyrachyus modestus
species
7Animalia : Chordata : Mammalia : Perissodactyla : Hyrachyidae : Hyrachyus : Hyrachyus modestus50.3 - 46.2 Ma
Eocene
Helaletes nanus
species
7Animalia : Chordata : Mammalia : Perissodactyla : Helaletes : Helaletes nanus50.3 - 46.2 Ma
Eocene
Hyracotherium vasacciense
species
7Animalia : Chordata : Mammalia : Perissodactyla : Palaeotheriidae : Hyracotherium : Hyracotherium vasacciense55.8 - 50.3 Ma
Eocene
Pelycodus jarrovii
species
7Animalia : Chordata : Mammalia : Primates : Adapidae : Pelycodus : Pelycodus jarrovii55.8 - 50.3 Ma
Eocene
Cynodontomys lundeliusi
species
7Animalia : Chordata : Mammalia : Primates : Microsyopidae : Megadelphus : Cynodontomys lundeliusi50.3 - 46.2 Ma
Eocene
Cynodontomys knightensis
species
7Animalia : Chordata : Mammalia : Primates : Microsyopidae : Microsyops : Cynodontomys knightensis55.8 - 50.3 Ma
Eocene
Cynodontomys latidens
species
7Animalia : Chordata : Mammalia : Primates : Microsyopidae : Microsyops : Cynodontomys latidens55.8 - 50.3 Ma
Eocene
Microsyops scottianus
species
7Animalia : Chordata : Mammalia : Primates : Microsyopidae : Microsyops : Microsyops scottianus55.8 - 50.3 Ma
Eocene
Notharctinae
subfamily
5.3Animalia : Chordata : Mammalia : Primates : Notharctidae : Notharctinae55.8 - 50.3 Ma
Eocene
Notharctus robinsoni
species
7Animalia : Chordata : Mammalia : Primates : Notharctidae : Notharctus : Notharctus robinsoni50.3 - 46.2 Ma
Eocene
Smilodectes gracilis
species
7Animalia : Chordata : Mammalia : Primates : Notharctidae : Smilodectes : Smilodectes gracilis50.3 - 46.2 Ma
Eocene
Smilodectes mcgrewi
species
7Animalia : Chordata : Mammalia : Primates : Notharctidae : Smilodectes : Smilodectes mcgrewi50.3 - 46.2 Ma
Eocene
Absarokius metoecus
species
7Animalia : Chordata : Mammalia : Primates : Anaptomorphidae : Absarokius : Absarokius metoecus50.3 - 46.2 Ma
Eocene
Absarokius australis
species
7Animalia : Chordata : Mammalia : Primates : Anaptomorphidae : Artimonius : Absarokius australis50.3 - 46.2 Ma
Eocene
Absarokius nocerai
species
7Animalia : Chordata : Mammalia : Primates : Anaptomorphidae : Artimonius : Absarokius nocerai50.3 - 46.2 Ma
Eocene
Loveina zephyri
species
7Animalia : Chordata : Mammalia : Primates : Anaptomorphidae : Loveina : Loveina zephyri55.8 - 50.3 Ma
Eocene
Omomys carteri
species
7Animalia : Chordata : Mammalia : Primates : Omomyidae : Omomys : Omomys carteri50.3 - 46.2 Ma
Eocene
? no name ?
10050.3 - 46.2 Ma
Eocene
Huerfanius rutherfurdi
species
7Animalia : Chordata : Mammalia : Primates : Anaptomorphidae : Uintanius : Huerfanius rutherfurdi50.3 - 46.2 Ma
Eocene
Washakius izetti
species
7Animalia : Chordata : Mammalia : Primates : Anaptomorphidae : Washakius : Washakius izetti50.3 - 46.2 Ma
Eocene
Phenacolemur jepseni
species
7Animalia : Chordata : Mammalia : Primates : Paromomyidae : Simpsonlemur : Phenacolemur jepseni55.8 - 50.3 Ma
Eocene
Leptotomus parvus
species
7Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae : Leptotomus : Leptotomus parvus50.3 - 46.2 Ma
Eocene
Leptotomus costilloi
species
7Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae : Notoparamys : Leptotomus costilloi55.8 - 50.3 Ma
Eocene
Paramys copei
species
7Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae : Paramys : Paramys copei55.8 - 50.3 Ma
Eocene
Paramys excavatus
species
7Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae : Paramys : Paramys excavatus55.8 - 50.3 Ma
Eocene
Leptotomus grandis
species
7Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae : Quadratomus : Leptotomus grandis50.3 - 46.2 Ma
Eocene
Thisbemys elachistos
species
7Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae : Thisbemys : Thisbemys elachistos50.3 - 46.2 Ma
Eocene
Thisbemys perditus
species
7Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae : Thisbemys : Thisbemys perditus50.3 - 46.2 Ma
Eocene
Knightomys depressus
species
7Animalia : Chordata : Mammalia : Rodentia : Sciuravidae : Knightomys : Knightomys depressus50.3 - 46.2 Ma
Eocene
Knightomys huerfanensis
species
7Animalia : Chordata : Mammalia : Rodentia : Sciuravidae : Knightomys : Knightomys huerfanensis50.3 - 46.2 Ma
Eocene
Sciuravidae
family
5Animalia : Chordata : Mammalia : Rodentia : Sciuravidae50.3 - 46.2 Ma
Eocene
Esthonyx acutidens
species
7Animalia : Chordata : Mammalia : Tillotheriidae : Esthonyx : Esthonyx acutidens55.8 - 50.3 Ma
Eocene
Megalesthonyx sp.
genus
6Animalia : Chordata : Mammalia : Tillotheriidae : Megalesthonyx55.8 - 50.3 Ma
Eocene
Trogosus grangeri
species
7Animalia : Chordata : Mammalia : Tillotheriidae : Trogosus : Trogosus grangeri50.3 - 46.2 Ma
Eocene
Hyracotherium vortmani
species
7Animalia : Chordata : Mammalia : Phenacodontidae : Phenacodus : Hyracotherium vortmani55.8 - 50.3 Ma
Eocene
Glyptosaurus donohoei
species
7Animalia : Chordata : Reptilia : Squamata : Anguidae : Eoglyptosaurus : Glyptosaurus donohoei55.8 - 50.3 Ma
Eocene
Glyptosaurinae
subfamily
5.3Animalia : Chordata : Reptilia : Squamata : Anguidae : Glyptosaurinae50.3 - 46.2 Ma
Eocene
Glyptosaurus sylvestris
species
7Animalia : Chordata : Reptilia : Squamata : Anguidae : Glyptosaurus : Glyptosaurus sylvestris55.8 - 50.3 Ma
Eocene
Paraglyptosaurus princeps
species
7Animalia : Chordata : Reptilia : Squamata : Anguidae : Paraglyptosaurus : Paraglyptosaurus princeps50.3 - 46.2 Ma
Eocene
Cheilophis huerfanoensis
species
7Animalia : Chordata : Reptilia : Squamata : Boidae : Cheilophis : Cheilophis huerfanoensis50.3 - 46.2 Ma
Eocene
Saniwa sp.
genus
6Animalia : Chordata : Reptilia : Squamata : Varanidae : Saniwa50.3 - 46.2 Ma
Eocene
Echmatemys stevensoniana
species
7Animalia : Chordata : Reptilia : Testudines : Geoemydidae : Echmatemys : Echmatemys stevensoniana50.3 - 46.2 Ma
Eocene
Baltemys staurogastros
species
7Animalia : Chordata : Reptilia : Testudines : Kinosternidae : Baltemys : Baltemys staurogastros50.3 - 46.2 Ma
Eocene
Hadrianus corsoni
species
7Animalia : Chordata : Reptilia : Testudines : Testudinidae : Hadrianus : Hadrianus corsoni50.3 - 46.2 Ma
Eocene
Pantrionychidae
unranked clade
99Animalia : Chordata : Reptilia : Testudines : Pantrionychidae50.3 - 46.2 Ma
Eocene
Trionychidae
family
5Animalia : Chordata : Reptilia : Testudines : Trionychidae50.3 - 46.2 Ma
Eocene

References

Osborn H. F. (1916) Two new Oligocene titanotheres, Bulletin of the American Museum of Natural History 35 40, 1-4
Gilmore C. W. (1928) Fossil lizards of North America, Memoirs of the National Academy of Sciences 22 3, 1-201
Gilmore C. W. (1938) Fossil snakes of North America, Geological Society of America Special Paper 9, 1-96
Robinson P. (1966) Fossil Mammalia of the Huerfano Formation, Eocene, of Colorado, Peabody Museum of Natural History Bulletin 21, 1-95
Simpson G. G. (1968) A didelphid (Marsupialia) from the Early Eocene of Colorado, Postilla 115, 1-3
Guthrie D. A. (1971) The Mammalian Fauna of the Lost Cabin Member, Wind River Formation (lower Eocene) of Wyoming, Annals of Carnegie Museum 43 4, 47-113
McKenna M. C. (1976) Esthonyx in the Upper Faunal Assemblage, Huerfano Formation, Eocene of Colorado, Journal of Paleontology 50 2, 354-355
Gingerich P. D. (1979) Phylogeny of middle Eocene Adapidae (Mammalia, Primates) in North America: Smilodectes and Notharctus, Journal of Paleontology 53 1, 153-163
Sullivan R. M. (1979) Revision of the Paleogene genus Glyptosaurus (Reptilia, Anguidae), Bulletin of the American Museum of Natural History 163 1, 1-72
Bown T. M., Kihm A. J. (1981) Xenicohippus, an Unusual New Hyracotheriine (Mammalia, Perissodactyla) from Lower Eocene Rocks of Wyoming, Colorado and New Mexico, Journal of Paleontology 55 1, 257-260
Gingerich P. D., Haskin R. A. (1981) Dentition of Early Eocene Pelycodus jarrovii (Mammalia, Primates) and the Generic Attribution of Species Formerly Referred to Pelycodus, Contributions from the Museum of Paleontology, University of Michigan 25 17, 327-337
Schoch R. M., Lucas S. G. (1981) New Conoryctines (Mammalia: Taeniodonta) from the Middle Paleocene (Torrejonian) of Western North America, Journal of Mammalogy 62 4
Korth W. W. (1984) Earliest Tertiary evolution and radiation of rodents in North America, Bulletin of Carnegie Museum of Natural History 24, 1-71
Stucky R. K. (1984) The Wasatchian-Bridgerian Land Mammal Age boundary (early to middle Eocene) in western North America, Annals of Carnegie Museum 53 12, 347-382
Kihm A. J. (1984) , Early Eocene Mammalian Fauna of the Piceance Creek Basin. Northwestern Colorado
Krishtalka L., Stucky R. K. (1985) Revision of the Eocene Wind River Faunas, Early Eocene of Central Wyoming. Part 7. Revision of Diacodexis (Mammalian, Artiodactyla), Annals of Carnegie Museum 54 14, 413-486
Bown T. M., Rose K. D. (1987) Patterns of Dental Evolution in Early Eocene Anaptomorphine Primates (Omomyidae) from the Bighorn Basin, Wyoming, Paleontological Society Memoir 23, 1-162
Gunnell G. F. (1989) Evolutionary History of Microsyopoidea (Mammalia, ?Primates) and the Relationship Between Plesiadapiformes and Primates, University of Michigan Papers on Paleontology 27, 1-157
Honey J. G. (1990) New Washakiin Primates (Omomyidae) from the Eocene of Wyoming and Colorado, and Comments on the Evolution of the Washakiini, Journal of Vertebrate Paleontology 10 2
Stucky R. K., Krishtalka L. (1990) Revision of the Wind River Faunas, Early Eocene of Central Wyoming. Part 10. Bunophorus (Mammalia, Artiodactyla), Annals of Carnegie Museum 59 2, 149-171
Beard K. C., Sigé B., et al (1992) A primitive vespertilionoid bat from the early Eocene of central Wyoming, Comptes Rendus de l'Academie des Sciences, Paris, Serie II 314, 735-741
Redline A. D. (1997) Revision of the Wind River faunas, early Eocene of central Wyoming. Part 13. Systematics and phylogenetic pattern of early Eocene Hyopsodus (Mammalia: Condylarthra), Annals of Carnegie Museum 66 1, 1-81
Lucas S. G. (1998) Fossil mammals and the Paleocene/Eocene series boundary in Europe, North America, and Asia, Late Paleocene–Early Eocene Biotic and Climatic Events in the Marine and Terrestrial Records, 451-500
O'Leary M. A. (1998) Morphology of the humerus of Hapalodectes (Mammalia, Mesonychia), American Museum Novitates 3242, 1-6
Froehlich D. J. (1999) Phylogenetic systematics of basal perissodactyls, Journal of Vertebrate Paleontology 19 1, 140-159
Froehlich D. J. (2002) Quo vadis Eohippus? The systematics and taxonomy of the early Eocene equids (Perissodactyla), Zoological Journal of the Linnean Society 134, 141-256 doi:10.1046/j.1096-3642.2002.00005.x
Alroy J. (2002) Synonymies and reidentifications of North American fossil mammals
Muldoon K. M., Gunnell G. F. (2002) Omomyid primates (Tarsiiformes) from the Early Middle Eocene at South Pass, Greater Green River Basin, Wyoming, Journal of Human Evolution 43 4, 479-511
Lichtig A. J., Lucas S. G. (2015) Turtles of the Eocene Huerfano Formatoin, Raton Basin, Colorado, New Mexico Museum of Natural History and Science Bulletin 67, 153-160
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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