Huerfano VI: Wasatchian, Colorado
collected by Wortman, Granger, OIsen

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Anguidae
Paraglyptosaurus princeps (Marsh 1872)
Sullivan 1979 1 specimen
synonym of Glyptosaurus sylvestris
AMNH 1619, left dentary and two right maxillae and tooth fragment
Reptilia - Testudines
Hadrianus corsoni (Leidy 1871)
Lichtig and Lucas 2015
UCM loc. 77040 Huerfano VI bed 16
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
Lichtig and Lucas 2015
UCM loc. 91048 Huerfano VI bed 16
Mammalia - Coryphodontidae
Coryphodon molestus (Cope 1874)
    = Coryphodon armatus Cope 1872
Lucas 1998
"C. sp."
Mammalia - Esthonychidae
Megalesthonyx sp. Rose 1971
Stucky 1984
Esthonyx acutidens Cope 1881
Stylinodon sp. Marsh 1874
    = Stylinodon mirus Marsh 1874
Schoch and Lucas 1981
Mammalia - Leptictidae
Palaeictops matthewi Novacek 1977
    = Palaeictops multicuspis Granger 1910
Kihm 1984
original and current combination Parictops multicuspis
"?Diacodon or ?Palaeictops"; said by Rose 1999a to be from "Garcia Canon area, Colorado"
Mammalia - Primates - Adapidae
Pelycodus jarrovii (Cope 1874)
Gingerich and Haskin 1981
sensu stricto
Mammalia - Primates - Notharctidae
Notharctus nunienus (Cope 1881)
    = Notharctinae indet. Trouessart 1879
Alroy 2002
probably N. robinsoni or Smilodectes mcgrewi; see Gingerich 1979a
Mammalia - Primates - Omomyidae
Loveina zephyri Simpson 1940
Mammalia - Primates - Paromomyidae
Phenacolemur jepseni Simpson 1955
    = Simpsonlemur jepseni Simpson 1955
Alroy 2002
includes type of "Phenacolemur jepseni simpsoni":
Mammalia - Primates - Microsyopidae
Cynodontomys scottianus (Cope 1881)
    = Microsyops scottianus Cope 1881
Alroy 2002
Cynodontomys knightensis Gazin 1952
    = Microsyops knightensis Gazin 1952
Alroy 2002
Mammalia - Rodentia - Ischyromyidae
Paramys excavatus Loomis 1907
"Paramys excavatus gardneri": falsely said by Korth 1984 not to have been reported by Robinson
Mammalia - Viverravidae
Didymictis altidens Cope 1880
Viverravus gracilis Marsh 1872
Mammalia - Creodonta - Oxyaenidae
Oxyaena cf. lupina Cope 1874
probably OK according to Gunnell 1998a
Mammalia - Diacodexeidae
Bunophorus macropternus (Cope 1882)
    = Bunophorus sinclairi Guthrie 1966
Stucky and Krishtalka 1990
Diacodexis minutus Krishtalka and Stucky 1985
Krishtalka and Stucky 1985
Mammalia - Perissodactyla
Hyracotherium craspedotum Cope 1880
    = Perissodactyla indet. Owen 1848
Alroy 2002
- could be Systemodon tapirinus
Mammalia - Perissodactyla - Palaeotheriidae
Hyracotherium vasacciense (Cope 1872)
"Hyracotherium vasacciense vasacciense":
Mammalia - Perissodactyla - Brontotheriidae
Lambdotherium popoagicum Cope 1880
Lambdotherium magnum n. sp. Osborn 1919
Osborn 1916
synonym of Lambdotherium popoagicum
AMNH 17527
Lambdotherium priscum Osborn 1913
Osborn 1916
synonym of Lambdotherium popoagicum
AMNH 17526
Mammalia - Phenacodontidae
Phenacodus vortmani (Cope 1880)
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus wortmani Osborn 1902
OK according to Redline 1997
Hyopsodus walcottianus Matthew 1915
OK according to Redline 1997
see common names

Country:United States State/province:Colorado County:Huerfano
Coordinates: 37.8° North, 105.1° West (view map)
Paleocoordinates:42.2° North, 89.4° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Period:Paleogene Epoch:Eocene
Stage:Ypresian 10 m.y. bin:Cenozoic 2
Key time interval:Wasatchian
Age range of interval:54.90000 - 50.50000 m.y. ago
* legacy (obsolete) database fields
Local section:Huerf Local bed:2
Local order:bottom to top
Stratigraphy comments: "Huerfano facies"
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Collectors:Wortman, Granger, OIsen
Taxonomic list comments:Lostcabinian

"Most of Wortman's collection of 1897 came from here and probably from unit 13 of measured section; unit 13 has consistently produced good specimens and matches the description of the best bone-bearing layer given by Wortman to Osborn. Granger and Olsen also made good collections here."
Also known as:Garcia Canyon; Apodaca Gulch; UCM locality 77040
Database number:15650
Authorizer:J. Alroy, P. Barrett, P. Holroyd, J. Marcot Enterer:J. Alroy, T. Cleary, P. Holroyd, J. Marcot
Modifier:P. Holroyd Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2024-01-07 22:46:10
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

2921. P. Robinson. 1966. Fossil Mammalia of the Huerfano Formation, Eocene, of Colorado. Peabody Museum of Natural History Bulletin 21:1-95 [J. Alroy/J. Alroy/J. Marcot]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1670 P. D. Gingerich and R. A. Haskin. 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 [J. Alroy/J. Alroy/P. Mannion]
2078 A. J. Kihm. 1984. Early Eocene Mammalian Fauna of the Piceance Creek Basin. Northwestern Colorado. [J. Alroy/J. Alroy/M. Uhen]
2183 L. Krishtalka and R. K. Stucky. 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 [J. Alroy/J. Alroy/J. Marcot]
58369 A. J. Lichtig and S. G. Lucas. 2015. Turtles of the Eocene Huerfano Formatoin, Raton Basin, Colorado. New Mexico Museum of Natural History and Science Bulletin 67:153-160 [P. Holroyd/P. Holroyd]
6280 S. G. Lucas. 1998. Fossil mammals and the Paleocene/Eocene series boundary in Europe, North America, and Asia. In M.-P. Aubry, S. G. Lucas and W. A. Berggren (eds.), Late Paleocene–Early Eocene Biotic and Climatic Events in the Marine and Terrestrial Records 451-500 [J. Alroy/J. Alroy/M. Uhen]
2701 H. F. Osborn. 1916. Two new Oligocene titanotheres. Bulletin of the American Museum of Natural History 35(40):1-4 [J. Alroy/J. Alroy/J. Ju]
3057 R. M. Schoch and S. G. Lucas. 1981. New Conoryctines (Mammalia: Taeniodonta) from the Middle Paleocene (Torrejonian) of Western North America. Journal of Mammalogy 62(4) [J. Alroy/J. Alroy/J. Ju]
3331 R. K. Stucky. 1984. The Wasatchian-Bridgerian Land Mammal Age boundary (early to middle Eocene) in western North America. Annals of Carnegie Museum 53(12):347-382 [J. Alroy/J. Alroy/J. Alroy]
3335 R. K. Stucky and L. Krishtalka. 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 [J. Alroy/J. Alroy/J. Marcot]
60385 R. M. Sullivan. 1979. Revision of the Paleogene genus Glyptosaurus (Reptilia, Anguidae). Bulletin of the American Museum of Natural History 163(1):1-72 [P. Barrett/T. Cleary]