Huerfano VI (Eocene of the United States)

Also known as Garcia Canyon; Apodaca Gulch

Where: Huerfano County, Colorado (37.8° N, 105.1° W: paleocoordinates 42.2° N, 89.4° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Huerfano Formation, Wasatchian (55.8 - 50.3 Ma)

• "Huerfano facies"

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Collected by Wortman, Granger, OIsen

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 15650: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Patricia Holroyd, Terri Cleary and Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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."

Reptilia
 Testudines - Trionychidae
Trionychidae indet.5 Gray 1825 softshell turtle
UCM loc. 91048 Huerfano VI bed 16
 Testudines - Pantestudinidae
Hadrianus corsoni5 Leidy 1871 turtle
UCM loc. 77040 Huerfano VI bed 16
 Squamata - Anguidae
Paraglyptosaurus princeps11 Marsh 1872 squamates
AMNH 1619, left dentary and two right maxillae and tooth fragment
Mammalia
 Primates - Microsyopidae
Microsyops knightensis1 Gazin 1952 primate
Microsyops scottianus1 Cope 1881 primate
 Primates - Omomyidae
Loveina zephyri Simpson 1940 tarsier
 Primates - Adapidae
Pelycodus jarrovii2 Cope 1874 primate
sensu stricto
 Primates - Notharctidae
Notharctinae indet.1 Trouessart 1879 primate
 Primates - Paromomyidae
Simpsonlemur jepseni1 Simpson 1955 primate
 Cimolesta - Coryphodontidae
Coryphodon armatus6 Cope 1872 pantodont
 Leptictida - Leptictidae
Palaeictops multicuspis3 Granger 1910 eutherian
 Rodentia - Ischyromyidae
Paramys excavatus Loomis 1907 rodent
"Paramys excavatus gardneri": falsely said by Korth 1984 not to have been reported by Robinson
 Placentalia -
Perissodactyla indet.1 Owen 1848 odd-toed ungulate
 Perissodactyla - Brontotheriidae
"Lambdotherium popoagicum" = Lambdotherium popoagicum, "Lambdotherium priscum" = Lambdotherium popoagicum7, "Lambdotherium magnum n. sp." = Lambdotherium popoagicum7
"Lambdotherium popoagicum" = Lambdotherium popoagicum Cope 1880 brontothere
"Lambdotherium priscum" = Lambdotherium popoagicum7 Cope 1880 brontothere
AMNH 17526
"Lambdotherium magnum n. sp." = Lambdotherium popoagicum7 Cope 1880 brontothere
AMNH 17527
 Perissodactyla - Palaeotheriidae
Hyracotherium vasacciense Cope 1872 odd-toed ungulate
"Hyracotherium vasacciense vasacciense":
 Creodonta - Oxyaenidae
Oxyaena cf. lupina Cope 1874 creodont
probably OK according to Gunnell 1998a
 Ferae - Viverravidae
Didymictis altidens Cope 1880 placental
Viverravus gracilis Marsh 1872 placental
 Taeniodonta - Stylinodontidae
Stylinodon mirus8 Marsh 1874 taeniodont
 Trogontia - Esthonychidae
Esthonyx acutidens Cope 1881 tillodont
Megalesthonyx sp.9 Rose 1971 tillodont
 Ungulata - Hyopsodontidae
Hyopsodus walcottianus Matthew 1915 condylarth
OK according to Redline 1997
Hyopsodus wortmani Osborn 1902 condylarth
OK according to Redline 1997
 Ungulata - Diacodexeidae
Bunophorus sinclairi10 Guthrie 1966 even-toed ungulate
Diacodexis minutus4 Krishtalka and Stucky 1985 even-toed ungulate
 Ungulata - Phenacodontidae
Phenacodus vortmani Cope 1880 condylarth