Huerfano II (Eocene of the United States)

Also known as Fence Hill; Fossil Creek

Where: Huerfano County, Colorado (37.8° N, 105.1° W: paleocoordinates 41.3° N, 91.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Huerfano Formation, Bridgerian (50.3 - 46.2 Ma)

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 16240: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Patricia Holroyd and Terri Cleary

Creative Commons license: CC BY (attribution)

Taxonomic list

• Gardnerbuttean - "Most of specimens from unit 9 of measured section."
Reptilia
 Testudines - Trionychidae
Trionychidae indet.8 Gray 1825 softshell turtle
UCM Loc. 77039
 Testudines - Pantestudinidae
Hadrianus corsoni8 Leidy 1871 turtle
UCM Loc. 77063
 Squamata - Anguidae
Glyptosaurinae indet.16 Marsh 1872 lizard
AMNH 7593, left dentary fragment and other bone fragments
Paraglyptosaurus princeps16 Marsh 1872 lizard
AMNH 7544, frontal; 7597, left maxilla
cf. Paraglyptosaurus princeps16 Marsh 1872 lizard
AMNH 7454, right maxilla fragment; 7592, osteoderms; 7595, left dentary fragment; 7599, two parietal fragments
Glyptosaurus sylvestris16 Marsh 1871 lizard
AMNH 11045, left frontal
cf. Eoglyptosaurus donohoei16 White 1952 lizard
AMNH 7454??? Same specimen no. given as "cf. P. princeps", so not sure which is the accurate occurrence.
Mammalia
 Cimolesta - Esthonychidae
Esthonyx acutidens10 Cope 1881 tillodont
Trogosus grangeri Gazin 1953 tillodont
 Primates - Microsyopidae
Microsyops cf. scottianus3 Cope 1881 primate
Megadelphus lundeliusi1 White 1952 primate
 Primates - Notharctidae
Notharctus robinsoni2 Gingerich 1979 primate
Smilodectes mcgrewi2 Gingerich 1979 primate
 Primates - Omomyidae
Artimonius nocerai11 Robinson 1966 primate
Omomys carteri14 Leidy 1869 primate
Washakius cf. izetti5 Honey 1990 primate
Uintanius rutherfurdi1 Robinson 1966 primate
 Rodentia - Sciuravidae
Knightomys depressus7 Loomis 1907 rodent
Knightomys huerfanensis1 Wood 1962 rodent
 Rodentia - Ischyromyidae
Quadratomus grandis1 Wood 1962 rodent
Paramys copei Loomis 1907 rodent
Thisbemys perditus7 Wood 1962 rodent
Thisbemys elachistos7 Korth 1984 rodent
 Condylarthra - Hyopsodontidae
Hyopsodus paulus Leidy 1870 condylarth
includes "H. wortmani": Redline 1997
 Amblypoda - Coryphodontidae
Coryphodon armatus9 Cope 1872 pantodont
 Perissodactyla - Brontotheriidae
Palaeosyops fontinalis Cope 1873 brontothere
"Eotitanops minimus" = Eotitanops borealis Cope 1880 brontothere
see also Gunnell and Yarborough 2000
 Perissodactyla - Hyrachyidae
Hyrachyus modestus Leidy 1870 odd-toed ungulate
 Perissodactyla -
Helaletes cf. nanus Marsh 1871 odd-toed ungulate
 Perissodactyla - Palaeotheriidae
Hyracotherium vasacciense Cope 1872 odd-toed ungulate
"Hyracotherium vasacciense vasacciense":
 Ferae - Viverravidae
Viverravus gracilis Marsh 1872 placental
Viverravus sicarius Matthew 1909 placental
 Ferae -
Oodectes herpestoides Wortman 1901 placental
Uintacyon cf. asodes Gazin 1952 placental
 Carnivora - Miacidae
Miacis parvivorus Cope 1872 carnivoran
 Carnivora -
Vulpavus canavus4 Cope 1881 carnivoran
 Taeniodonta - Stylinodontidae
Stylinodon mirus12 Marsh 1874 taeniodont
 Acreodi - Mesonychidae
Mesonyx obtusidens Cope 1871 condylarth
 Hyaenodonta - Hyaenodontidae
Tritemnodon cf. strenuus1 Cope 1875 eutherian
Arfia sp.6 Van Valen 1965 eutherian
 Theriiformes - Herpetotheriidae
"Herpetotheriinae indet." = Herpetotheriidae1, Peratherium cf. comstocki13
"Herpetotheriinae indet." = Herpetotheriidae1 Trouessart 1879 marsupial
Peratherium cf. comstocki13 Cope 1884 marsupial
not the same as "? P. sp." reported by Robinson 1966a; Simpson's i.d. is confirmed by Krishtalka and Stucky 1983b
 Artiodactyla - Homacodontidae
Antiacodon pygmaeus Cope 1872 even-toed ungulate
"Antiacodon pygmaeus huerfanensis":
 Artiodactyla - Diacodexeidae
Bunophorus sinclairi15 Guthrie 1966 even-toed ungulate
 Sarcobora - Apatemyidae
Apatemyidae indet.1 Matthew 1909 insectivoran