John Day Units E and F ( of the United States)

Also known as Upper Foree Section

Where: Wheeler County, Oregon (44.7° N, 119.6° W: paleocoordinates 44.4° N, 110.7° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Turtle Cove Member (John Day Formation), Arikareean (30.8 - 20.4 Ma)

• member-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: E. D. Cope. 1879. Scientific news. The American Naturalist 13(12):798a-798b [M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 93078: authorized by John Alroy, entered by John Alroy on 28.12.2009, edited by Chris Bell

Creative Commons license: CC BY (attribution)

Taxonomic list

• very close to the eastern county line
SCLF AA date of 28.9 Ma on Blue Basin Tuff between units E and F
 Squamata - Rhineuridae
Dyticonastis rensbergeri2 Berman 1976 worm lizard
type specimen "Collected from below the Picture Gorge ignimbrite of the Turtle Cove Member of the John Day Formation (See Fisher and Rensberger, 1973) at UCMP South Canyon locality (V-6630), in SE1/4 sec. 3, T. 19 S., R. 20 E., Crescent Quadrangle Oregon. This level has been determined as late Whitneyan (latest Oligocene in age." (p. 168)
 Rodentia - Sciuridae
Miosciurus ballovianus3 Cope 1881 squirrel
omitted by Albright et al. 2008; possibly from unit D
 Rodentia - Castoridae
Palaeocastor peninsulatus1 Cope 1881 beaver
 Rodentia - Allomyidae
Haplomys liolophus1 Cope 1881 rodent
Allomys sp.1 Marsh 1877 rodent
 Lagomorpha - Leporidae
"Archaeolagus ennisianus" = Lepus ennisianus1
"Archaeolagus ennisianus" = Lepus ennisianus1 Cope 1881 hare
 Perissodactyla - Rhinocerotidae
Diceratherium sp.1 Marsh 1875 rhinoceros
 Perissodactyla - Equidae
Miohippus sp.1 Marsh 1874 anchitheriine horse
 Tribosphenida - Micropternodontidae
Micropternodus morgani3 Stirton and Rensberger 1964 placental
omitted by Albright et al. 2008; possibly from unit D
 Carnivora - Amphicyonidae
Daphoenus sp.1 Leidy 1853 bear-dog
 Carnivora - Canidae
Osbornodon sesnoni1 Macdonald 1967 canid
Mesocyon brachyops1 Merriam 1906 canid
Mesocyon coryphaeus1 Cope 1879 canid
present at UCMP V-6630 South Canyon, Deschutes Co.: Wang 1994
Paraenhydrocyon josephi1 Cope 1881 canid
Leptocyon mollis1 Merriam 1906 canine
may by "Nothocyon geismarianus mollis" of Merriam and Sinclair 1907
Cormocyon copei1 Wang and Tedford 1992 bone-crushing dog
unit F: Wang et al. 1999
Phlaocyon latidens1 Cope 1881 bone-crushing dog
present in units D, E1, E2, E3, F: Wang et al. 1999
Cynarctoides lemur1 Cope 1879 bone-crushing dog
present in units D, E1, E2, E3: Wang et al. 1999
Rhizocyon oregonensis1 Merriam 1906 bone-crushing dog
present in Beds E and F: Wang et al. 1999
 Carnivora - Nimravidae
Dinaelurus crassus1, Dinictis cyclops1, "Nimravus brachyops" = Pogonodon brachyops1, "Hoplophoneus platycopis n. sp." = Pogonodon platycopis
Dinaelurus crassus1 Eaton 1922 false sabre-tooth
presumably the type of Eaton 1922
Dinictis cyclops1 Cope 1879 false sabre-tooth
"Nimravus brachyops" = Pogonodon brachyops1 Cope 1878 false sabre-tooth
"Hoplophoneus platycopis n. sp." = Pogonodon platycopis Cope 1879 false sabre-tooth
includes "Nimravus davisi" of Fremd et al. 1994; this is the type specimen according to Bryant and Fremd 1998 and is from above the Blue Basin Tuff; Fremd et al. also list playtcopis under Nimravus
 Ungulata - Merycoidodontidae
Eporeodon occidentalis1 Marsh 1873 oreodont
includes "E. pacificus" and possibly "Eucrotaphus trigonocephalus," "Eucrotaphus condoni," "Pseudogenetochoerus covensis," and/or "Hypsiops johndayensis" of Fremd et al. 1994
"Eporeodon bullatus" = Merycoidodon (Otarohyus) bullatus1 Leidy 1869 oreodont
 Ungulata - Entelodontidae
Archaeotherium sp.1 Leidy 1850 even-toed ungulate
see Foss and Fremd 1998
 Ungulata - Agriochoeridae
Agriochoerus guyotianus1 Cope 1878 agriochoerid
 Ungulata - Hypertragulidae
Hypertragulus hesperius1, "Nanotragulus planiceps" = Hypertragulus planiceps1
Hypertragulus hesperius1 Hay 1902 ruminant
"Nanotragulus planiceps" = Hypertragulus planiceps1 Sinclair 1905 ruminant