Huerfano II (Eocene of the United States)

Also known as Fence Hill; Fossil Creek; UCM locality 77063

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 - Pantestudinidae
Hadrianus corsoni8 Leidy 1871 turtle
UCM Loc. 77063
 Testudines - Trionychidae
Trionychidae indet.8 Gray 1825 softshell turtle
UCM Loc. 77039
 Squamata - Anguidae
Glyptosaurinae indet.16, "Glyptosaurus sylvestris" = Glyptosaurus sylvestris16, "Paraglyptosaurus princeps" = Glyptosaurus sylvestris16, "cf. Paraglyptosaurus princeps" = Glyptosaurus sylvestris16, "cf. Eoglyptosaurus donohoei" = Glyptosaurus sylvestris16
Glyptosaurinae indet.16 Marsh 1872 squamates
AMNH 7593, left dentary fragment and other bone fragments
"Glyptosaurus sylvestris" = Glyptosaurus sylvestris16 Marsh 1871 squamates
AMNH 11045, left frontal
"Paraglyptosaurus princeps" = Glyptosaurus sylvestris16 Marsh 1871 squamates
AMNH 7544, frontal; 7597, left maxilla
"cf. Paraglyptosaurus princeps" = Glyptosaurus sylvestris16 Marsh 1871 squamates
AMNH 7454, right maxilla fragment; 7592, osteoderms; 7595, left dentary fragment; 7599, two parietal fragments
"cf. Eoglyptosaurus donohoei" = Glyptosaurus sylvestris16 Marsh 1871 squamates
AMNH 7454??? Same specimen no. given as "cf. P. princeps", so not sure which is the accurate occurrence.
Mammalia
 Theriamorpha - 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
 Theriamorpha - Stylinodontidae
Stylinodon mirus12 Marsh 1874 taeniodont
 Condylarthra - Hyopsodontidae
Hyopsodus paulus Leidy 1870 condylarth
includes "H. wortmani": Redline 1997
 Perissodactyla - Hyrachyidae
Hyrachyus modestus Leidy 1870 odd-toed ungulate
 Perissodactyla -
Helaletes cf. nanus Marsh 1871 odd-toed ungulate
 Perissodactyla - Brontotheriidae
"Eotitanops minimus" = Eotitanops gregoryi Osborn 1913 brontothere
see also Gunnell and Yarborough 2000
Palaeosyops fontinalis Cope 1873 brontothere
 Perissodactyla - Palaeotheriidae
Hyracotherium vasacciense Cope 1872 odd-toed ungulate
"Hyracotherium vasacciense vasacciense":
 Artiodactyla - Homacodontidae
Antiacodon pygmaeus Cope 1872 even-toed ungulate
"Antiacodon pygmaeus huerfanensis":
 Artiodactyla - Diacodexeidae
Bunophorus sinclairi15 Guthrie 1966 even-toed ungulate
 Creodonta - Hyaenodontidae
Tritemnodon cf. strenuus1 Cope 1875 creodont
Arfia sp.6 Van Valen 1965 creodont
 Theriamorpha - Viverravidae
Viverravus gracilis Marsh 1872 placental
Viverravus sicarius Matthew 1909 placental
 Theriamorpha -
Vulpavus canavus4 Cope 1881 placental
Miacis parvivorus Cope 1872 placental
Uintacyon cf. asodes Gazin 1952 placental
Oodectes herpestoides Wortman 1901 placental
 Acreodi - Mesonychidae
Mesonyx obtusidens Cope 1872 condylarth
 Rodentia - Sciuravidae
Knightomys depressus7 Loomis 1907 rodent
Knightomys huerfanensis1 Wood 1962 rodent
 Rodentia - Ischyromyidae
Quadratomus grandis1 Wood 1962 rodent
Thisbemys elachistos7 Korth 1984 rodent
Thisbemys perditus7 Wood 1962 rodent
Paramys copei Loomis 1907 rodent
 Primates - Omomyidae
Washakius cf. izetti5 Honey 1990 tarsier
Omomys carteri14 Leidy 1869 tarsier
Uintanius rutherfurdi1 Robinson 1966 tarsier
Artimonius nocerai11 Robinson 1966 tarsier
 Primates - Microsyopidae
Megadelphus lundeliusi1 White 1952 primate
Microsyops cf. scottianus3 Cope 1881 primate
 Primates - Notharctidae
Notharctus robinsoni2 Gingerich 1979 primate
Smilodectes mcgrewi2 Gingerich 1979 primate
 Cimolesta - Esthonychidae
Esthonyx acutidens10 Cope 1881 tillodont
Trogosus grangeri Gazin 1953 tillodont
 Cimolesta - Coryphodontidae
Coryphodon armatus9 Cope 1872 pantodont
 Cimolesta - Apatemyidae
Apatemyidae indet.1 Matthew 1909 eutherian