Flagstaff Rim I (Eocene of the United States)

Also known as Dry Hole Quarry (21.3 m); Low Red Quarry (18.3 m)

Where: Natrona County, Wyoming (43.2° N, 107.1° W: paleocoordinates 44.8° N, 98.4° W)

• coordinate based on political unit

When: White River Formation, Chadronian (37.2 - 33.9 Ma)

Environment/lithology: terrestrial

Primary reference: R. J. Emry. 1992. Mammalian Range Zones in the Chadronian White River Formation at Flagstaff Rim, Wyoming. In D. R. Prothero, W. A. Berggren (eds.), Eocene-Oligocene Climatic and Biotic Evolution 106-115 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 16960: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• 0-25 m
 Rodentia - Aplodontidae
Prosciurus cf. vetustus Matthew 1903 mountain beaver
 Rodentia - Sciuridae
Hesperopetes thoringtoni n. sp.4 Emry and Korth 2007 squirrel
small: said to be new
Douglassciurus jeffersoni5 Douglass 1902 squirrel
Dry Hole Quarry; misspelled as "Douglassiurus jeffersoni"
 Rodentia - Eomyidae
Namatomys erythrus n. sp.5 Emry and Korth 2012 rodent
Low Red Quarry; not clear if this is a reidentification of N. lloydi, or if they are both present in this collection
Namatomys lloydi Black 1965 rodent
this is the "true" Namatomys"
Litoyoderimys auogoleus2 Emry and Korth 1993 rodent
"Yoderimys" cf. lustrorum; from Dry Hole Quarry
Cristadjidaumo skinneri n. sp.5 Emry and Korth 2012 rodent
Dry Hole Quarry
Yoderimys stewarti Russell 1972 rodent
described by Emry and Korth 1993; from Dry Hole Quarry and Low Red Quarry
Adjidaumo minimus5 Matthew 1903 rodent
Adjidaumo ? burkei1 Russell 1954 rodent
Adjidaumo cf. craigi5 Storer 1987 rodent
Low Red Quarry
Aulolithomys vexilliames5 Korth and Emry 1997 rodent
Dry Hole Quarry
Metanoiamys paradoxus5 Emry and Korth 2012 rodent
Dry Hole Quarry; possibly type locality
 Rodentia -
Griphomys sp.5 Wilson 1940 rodent
 Rodentia - Heliscomyidae
Heliscomys ostranderi6 Korth et al. 1991 rodent
Dry Hole Quarry
 Rodentia - Ischyromyidae
Paramys compressidens, "Titanotheriomys veterior" = Ischyromys veterior
Paramys compressidens Peterson 1919 rodent
"Titanotheriomys veterior" = Ischyromys veterior Matthew 1903 rodent
 Rodentia - Cylindrodontidae
Cylindrodon natronensis3 Emry and Korth 1996 rodent
 Lagomorpha - Leporidae
Palaeolagus primus n. sp. Emry and Gawne 1986 rabbit
from Dry Hole Quarry: see Emry and Gawne 1986
 Lipotyphla - Geolabididae
Centetodon chadronensis Lillegraven et al. 1981 placental
Low Red Pocket: Asher et al. 2005
 Perissodactyla - Brontotheriidae
Brontotheriidae indet. Marsh 1873 brontothere
 Perissodactyla - Hyracodontidae
Hyracodon cf. priscidens Lambe 1905 odd-toed ungulate
at Dry Hole Quarry: Prothero 1996e
 Perissodactyla - Rhinocerotidae
"Caenopus dakotensis" = Penetrigonias dakotensis
"Caenopus dakotensis" = Penetrigonias dakotensis Peterson 1920 rhinoceros
 Perissodactyla - Tapiridae
Colodon sp. Marsh 1890 tapir
 Tribosphenida - Apternodontidae
"Apternodus altitalonidus" = Oligoryctes altitalonidus
"Apternodus altitalonidus" = Oligoryctes altitalonidus Clark 1936 placental
 Carnivora - Ursidae
"Subparictis parvus" = Parictis parvus
"Subparictis parvus" = Parictis parvus Clark and Beerbower 1967 bear
 Carnivora - Amphicyonidae
Brachyrhynchocyon sp.1 Scott and Jepsen 1936 bear-dog
Daphoenictis sp. Hunt 1974 bear-dog
at Dry Hole Quarry: Hunt 1998b
 Carnivora - Canidae
Hesperocyon sp.1 Scott 1890 canid
 Carnivora - Nimravidae
? Nimravidae indet. Cope 1880 false sabre-tooth
"? paleofelid"; from 60' level, see Bryant 1996
 Ungulata - Merycoidodontidae
Bathygenys sp., "Merycoidodon cf. presidioensis" = Merycoidodon (Merycoidodon) presidioensis9
Bathygenys sp. Douglass 1902 oreodont
"Merycoidodon cf. presidioensis" = Merycoidodon (Merycoidodon) presidioensis9 Stevens and Stevens 1996 oreodont
 Ungulata - Leptochoeridae
Stibarus sp. Cope 1873 even-toed ungulate
 Ungulata - Entelodontidae
Brachyhyops viensis8 Russell 1980 even-toed ungulate
 Ungulata - Camelidae
Poebrotherium sp. Leidy 1847 camel
 Ungulata - Oromerycidae
Eotylopus reedi Matthew 1910 even-toed ungulate
 Ungulata - Agriochoeridae
Agriochoerus sp. Leidy 1850 agriochoerid
said to be new
Agriochoerus maximus Douglass 1902 agriochoerid
 Ungulata - Protoceratidae
"Leptotragulus profectus" = Trigenicus profectus
"Leptotragulus profectus" = Trigenicus profectus Matthew 1903 protoceratid
 Ungulata - Praetragulidae
Parvitragulus priscus Emry 1978 ruminant
 Ungulata - Hypisodontidae
Hypisodus sp. Cope 1873 ruminant
 Ungulata - Leptomerycidae
"Pseudoprotoceras semicinctus" = Leptomeryx semicinctus, Leptomeryx yoderi
"Pseudoprotoceras semicinctus" = Leptomeryx semicinctus Cope 1889 ruminant
Leptomeryx yoderi Schlaikjer 1935 ruminant
confirmed by Heaton and Emry 1996
 Insectivora - Apatemyidae
Sinclairella sp. Jepsen 1934 insectivoran
 Hyaenodonta - Hyaenodontidae
Hyaenodon venturae7 Mellett 1977 eutherian
Dry Hole Quarry
 Hyaenodonta - Hyainailouridae
Hemipsalodon sp. Cope 1885 eutherian
 Didelphimorphia - Didelphidae
Didelphidae indet.1 Gray 1821 opossum