PBDB Collection

Huerfano II: Bridgerian, Colorado

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Reptilia - Anguidae

	Glyptosaurinae indet. Marsh 1872	Sullivan 1979	1 specimen
	AMNH 7593, left dentary fragment and other bone fragments

	Glyptosaurus sylvestris Marsh 1871	Sullivan 1979	1 specimen
	AMNH 11045, left frontal

	Paraglyptosaurus princeps (Marsh 1872)	Sullivan 1979	2 specimens
	synonym of Glyptosaurus sylvestris
	AMNH 7544, frontal; 7597, left maxilla

	cf. Paraglyptosaurus princeps (Marsh 1872)	Sullivan 1979	4 specimens
	synonym of Glyptosaurus sylvestris
	AMNH 7454, right maxilla fragment; 7592, osteoderms; 7595, left dentary fragment; 7599, two parietal fragments

	cf. Eoglyptosaurus donohoei (White 1952)	Sullivan 1979	1 specimen
	synonym of Glyptosaurus sylvestris
	AMNH 7454??? Same specimen no. given as "cf. P. princeps", so not sure which is the accurate occurrence.
Reptilia - Testudines

	Hadrianus corsoni (Leidy 1871)	Lichtig and Lucas 2015
	UCM Loc. 77063
Reptilia - Testudines - Trionychidae

	Trionychidae indet. Gray 1825	Lichtig and Lucas 2015
	UCM Loc. 77039
Mammalia

	Stylinodon sp. Marsh 1874
	= Stylinodon mirus Marsh 1874	Schoch and Lucas 1981
Mammalia - Apatemyidae

	Apatemys sp. Marsh 1872
	= Apatemyidae indet. Matthew 1909	Alroy 2002
	large and small
Mammalia - Coryphodontidae

	Coryphodon molestus (Cope 1874)
	= Coryphodon armatus Cope 1872	Lucas 1998
	"C. sp."
Mammalia - Esthonychidae

	Esthonyx acutidens Cope 1881	McKenna 1976

	Trogosus grangeri Gazin 1953
Mammalia - Condylarthra - Hyopsodontidae

	Hyopsodus paulus Leidy 1870
	includes "H. wortmani": Redline 1997
Mammalia - Acreodi - Mesonychidae

	Mesonyx obtusidens Cope 1872
Mammalia - Creodonta - Hyaenodontidae

	Arfia sp. Van Valen 1965	Kihm 1984

	Sinopa cf. strenua (Cope 1875)
	= Tritemnodon cf. strenuus Cope 1875	Alroy 2002
Mammalia

	Miacis parvivorus Cope 1872

	Vulpavus asius Gazin 1952
	= Vulpavus canavus Cope 1881	Guthrie 1971

	Uintacyon cf. asodes Gazin 1952
Mammalia - Viverravidae

	Viverravus sicarius Matthew 1909

	Viverravus gracilis Marsh 1872
Mammalia

	Oodectes herpestoides Wortman 1901
Mammalia - Perissodactyla - Palaeotheriidae

	Hyracotherium vasacciense (Cope 1872)
	"Hyracotherium vasacciense vasacciense":
Mammalia - Perissodactyla - Brontotheriidae

	Eotitanops minimus Osborn 1919
	synonym of Eotitanops gregoryi
	see also Gunnell and Yarborough 2000

	Palaeosyops fontinalis Cope 1873
Mammalia - Perissodactyla - Hyrachyidae

	Hyrachyus modestus (Leidy 1870)
Mammalia - Perissodactyla

	Helaletes cf. nanus (Marsh 1871)
Mammalia - Homacodontidae

	Antiacodon pygmaeus (Cope 1872)
	"Antiacodon pygmaeus huerfanensis":
Mammalia - Diacodexeidae

	Bunophorus cf. macropternus (Cope 1882)
	(5 measurements)
	= Bunophorus sinclairi Guthrie 1966	Stucky and Krishtalka 1990
Mammalia - Rodentia - Sciuravidae

	Paramys huerfanensis Wood 1962
	= Knightomys huerfanensis Wood 1962	Alroy 2002
	may include "Microparamys sp. B" of Wood 1962, which according to Korth 1984 is a K. huerfanensis specimen from either Huerfano II, III, or V

	Knightomys depressus (Loomis 1907)	Korth 1984
Mammalia - Rodentia - Ischyromyidae

	Thisbemys nini Wood 1962
	= Thisbemys perditus Wood 1962	Korth 1984
	"Leptotomus huerfanensis," and "Paramys excavatus gardneri"

	Thisbemys elachistos Korth 1984	Korth 1984
	(5 measurements)

	Paramys copei Loomis 1907

	Leptotomus grandis Wood 1962
	= Quadratomus grandis Wood 1962	Alroy 2002
Mammalia - Primates - Notharctidae

	Notharctus nunienus (Cope 1881)
	(13 measurements)
	= Smilodectes mcgrewi Gingerich 1979	Gingerich 1979
	in part

	Notharctus nunienus (Cope 1881)
	= Notharctus robinsoni Gingerich 1979	Gingerich 1979
	in part
Mammalia - Primates - Omomyidae

	Omomys carteri Leidy 1869	Stucky 1984

	Huerfanius rutherfurdi n. sp. Robinson 1966
	= Uintanius rutherfurdi Robinson 1966	Alroy 2002

	Shoshonius cooperi Granger 1910
	(1 measurement)
	= Washakius cf. izetti Honey 1990	Honey 1990
	omitted from faunal list by Robinson but discussed on p. 33

	Absarokius noctivagus Matthew 1915
	= Absarokius nocerai n. sp. Robinson 1966	Bown and Rose 1987
	"Absarokius noctivagus nocerai"
	= Artimonius nocerai Robinson 1966	Muldoon and Gunnell 2002
Mammalia - Primates - Microsyopidae

	Cynodontomys knightensis Gazin 1952
	= Microsyops cf. scottianus Cope 1881	Gunnell 1989

	Microsyops lundeliusi (White 1952)
	= Megadelphus lundeliusi White 1952	Alroy 2002
Mammalia

	Peratherium sp. Aymard 1850
	= Herpetotheriinae indet. Trouessart 1879	Alroy 2002
	spelled with current rank as Herpetotheriidae

	Peratherium cf. comstocki Cope 1884	Simpson 1968
	not the same as "? P. sp." reported by Robinson 1966a; Simpson's i.d. is confirmed by Krishtalka and Stucky 1983b
see common names

Geography

Country:	United States	State/province:	Colorado	County:	Huerfano
Coordinates:	37.8° North, 105.1° West (view map)
Paleocoordinates:	41.3° North, 91.8° West
Basis of coordinate:	based on political unit
Geographic resolution:	small collection

Time

Period:	Paleogene	Epoch:	Eocene
10 m.y. bin:	Cenozoic 2
*Period:	Tertiary
Key time interval:	Bridgerian
Age range of interval:	50.50000 - 46.20000 m.y. ago
* legacy (obsolete) database fields

Stratigraphy

Formation:	Huerfano
Local section:	Huerf	Local bed:	4
Local order:	bottom to top

Lithology and environment

Primary lithology:	not reported
Environment:	terrestrial indet.

Taphonomy

Modes of preservation:	body
Size of fossils:	macrofossils,mesofossils

Collection methods and comments

Collection size:	170 specimens
Reason for describing collection:	general faunal/floral analysis
Taxonomic list comments:Gardnerbuttean - "Most of specimens from unit 9 of measured section."

Metadata

Also known as:	Fence Hill; Fossil Creek; UCM locality 77063
Database number:	16240
Authorizer:	J. Alroy, P. Holroyd, P. Barrett	Enterer:	J. Alroy, T. Cleary, P. Holroyd
Modifier:	P. Holroyd	Research group:	vertebrate
Created:	1993-02-18 00:00:00	Last modified:	2024-01-07 22:49:56
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]
1123		T. M. Bown and K. D. Rose. 1987. Patterns of Dental Evolution in Early Eocene Anaptomorphine Primates (Omomyidae) from the Bighorn Basin, Wyoming. Paleontological Society Memoir 23:1-162 [J. Alroy/J. Alroy/J. Ju]
1638		P. D. Gingerich. 1979. Phylogeny of middle Eocene Adapidae (Mammalia, Primates) in North America: Smilodectes and Notharctus. Journal of Paleontology 53(1):153-163 [J. Alroy/J. Alroy/J. Alroy]
1730		G. F. Gunnell. 1989. Evolutionary History of Microsyopoidea (Mammalia, ?Primates) and the Relationship Between Plesiadapiformes and Primates. University of Michigan Papers on Paleontology 27:1-157 [J. Alroy/J. Alroy/P. Mannion]
1761		D. A. Guthrie. 1971. The Mammalian Fauna of the Lost Cabin Member, Wind River Formation (lower Eocene) of Wyoming. Annals of Carnegie Museum 43(4):47-113 [J. Alroy/J. Alroy/J. Marcot]
1932		J. G. Honey. 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) [J. Alroy/J. Alroy/J. Ju]
2078		A. J. Kihm. 1984. Early Eocene Mammalian Fauna of the Piceance Creek Basin. Northwestern Colorado. [J. Alroy/J. Alroy/M. Uhen]
2105		W. W. Korth. 1984. Earliest Tertiary evolution and radiation of rodents in North America. Bulletin of Carnegie Museum of Natural History 24:1-71 [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]
2533		M. C. McKenna. 1976. Esthonyx in the Upper Faunal Assemblage, Huerfano Formation, Eocene of Colorado. Journal of Paleontology 50(2):354-355 [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]
3161		G. G. Simpson. 1968. A didelphid (Marsupialia) from the Early Eocene of Colorado. Postilla 115:1-3 [J. Alroy/J. Alroy/M. Carrano]
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]