Flagstaff Rim I: Chadronian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Ischyromyidae
Titanotheriomys veterior (Matthew 1903)
original and current combination Ischyromys veterior
Paramys compressidens Peterson 1919
Mammalia - Rodentia - Aplodontidae
Prosciurus cf. vetustus (Matthew 1903)
original and current combination Sciurus (Prosciurus) vetustus
Mammalia - Rodentia - Sciuridae
Douglassciurus jeffersoni (Douglass 1902)
Emry and Korth 2012
Dry Hole Quarry; misspelled as "Douglassiurus jeffersoni"
Sciuridae indet. Gray 1821
small: said to be new
    = Hesperopetes thoringtoni n. sp. Emry and Korth 2007
Emry and Korth 2007
"... from the locality called “Low Red Pocket” in Little Lone Tree Gulch"
Mammalia - Rodentia - Heliscomyidae
Heliscomys ostranderi Korth et al. 1991
Korth et al. 1991
Dry Hole Quarry
Mammalia - Rodentia
Griphomys sp. Wilson 1940
Emry and Korth 2012
Mammalia - Rodentia - Eomyidae
Metanoiamys paradoxus Emry and Korth 2012
Emry and Korth 2012
Dry Hole Quarry; possibly type locality
Adjidaumo cf. minimus (Matthew 1903)
    = Adjidaumo minimus Matthew 1903
Emry and Korth 2012
Dry Hole Quarry
Adjidaumo cf. craigi Storer 1987
Emry and Korth 2012
Low Red Quarry
Yoderimys stewarti (Russell 1972)
described by Emry and Korth 1993; from Dry Hole Quarry and Low Red Quarry (6 measurements)
Litoyoderimys auogoleus Emry and Korth 1993
Emry and Korth 1993
"Yoderimys" cf. lustrorum; from Dry Hole Quarry
Aulolithomys vexilliames Korth and Emry 1997
Emry and Korth 2012
Dry Hole Quarry
Cristadjidaumo skinneri n. sp. Emry and Korth 2012
Emry and Korth 2012
Dry Hole Quarry
Namatomys erythrus n. sp. Emry and Korth 2012
Emry and Korth 2012
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
this is the "true" Namatomys"
Protadjidaumo burkei Russell 1954
    = Adjidaumo ? burkei Russell 1954
Alroy 2002
    = Paradjidaumo hansonorum Russell 1972
Emry and Korth 2013
Mammalia - Rodentia - Cylindrodontidae
Cylindrodon fontis Douglass 1902
    = Cylindrodon natronensis Emry and Korth 1996
Emry and Korth 1996
Mammalia - Lagomorpha - Leporidae
Palaeolagus primus n. sp. Emry and Gawne 1986
from Dry Hole Quarry: see Emry and Gawne 1986 (4 measurements)
Mammalia - Geolabididae
Centetodon chadronensis Lillegraven et al. 1981
Low Red Pocket: Asher et al. 2005
Mammalia - Oligoryctidae
Apternodus altitalonidus Clark 1936
recombined as Oligoryctes altitalonidus
Mammalia - Perissodactyla - Brontotheriidae
Brontotheriidae indet. (Marsh 1873)
Mammalia - Perissodactyla - Rhinocerotidae
Caenopus dakotensis Peterson 1920
recombined as Penetrigonias dakotensis
Mammalia - Perissodactyla - Hyracodontidae
Hyracodon cf. priscidens Lambe 1905
at Dry Hole Quarry: Prothero 1996e
Mammalia - Perissodactyla - Tapiridae
Colodon sp. Marsh 1890
Mammalia - Camelidae
Poebrotherium sp. Leidy 1847
Mammalia - Entelodontidae
Brachyhyops sp. Colbert 1937
(2 measurements)
    = Brachyhyops viensis Russell 1980
Lucas and Emry 2004
meter level not stated
Mammalia - Leptochoeridae
Stibarus sp. Cope 1873
Mammalia - Oromerycidae
Eotylopus reedi Matthew 1910
Mammalia - Protoceratidae
Leptotragulus profectus Matthew 1903
recombined as Trigenicus profectus
Mammalia - Agriochoeridae
Agriochoerus sp. Leidy 1850
said to be new
Agriochoerus maximus Douglass 1902
Mammalia - Hypisodontidae
Hypisodus sp. Cope 1873
Mammalia - Praetragulidae
Parvitragulus priscus Emry 1978
Mammalia - Leptomerycidae
Leptomeryx yoderi Schlaikjer 1935
confirmed by Heaton and Emry 1996
Pseudoprotoceras semicinctus (Cope 1889)
original and current combination Leptomeryx semicinctus
(1 measurement)
Mammalia - Merycoidodontidae
Merycoidodon lewisi Clark and Beerbower 1967
    = Merycoidodon cf. presidioensis Stevens and Stevens 1996
Stevens and Stevens 1996
Dry Hole Quarry; said to "possibly" be presidioensis
Bathygenys sp. Douglass 1902
Mammalia - Creodonta
Hemipsalodon sp. Cope 1885
Mammalia - Creodonta - Hyaenodontidae
Hyaenodon venturae Mellett 1977
Lavrov and Emry 1998
Dry Hole Quarry (1 measurement)
Mammalia - Carnivora - Nimravidae
? Nimravidae indet. Cope 1880
"? paleofelid"; from 60' level, see Bryant 1996
Mammalia - Carnivora - Amphicyonidae
Daphoenocyon sp. Hough 1948
    = Brachyrhynchocyon sp. Scott and Jepsen 1936
Alroy 2002
discussed by Hunt 1996 and said to be at Dry Hole Quarry
Daphoenictis sp. Hunt 1974
at Dry Hole Quarry: Hunt 1998b
Mammalia - Carnivora - Ursidae
Subparictis parvus (Clark and Beerbower 1967)
original and current combination Parictis parvus
Mammalia - Carnivora - Canidae
Hesperocyon paterculus (Matthew 1903)
    = Hesperocyon sp. Scott 1890
Alroy 2002
not documented as H. gregarius by Wang 1994
Mammalia - Apatemyidae
Sinclairella sp. Jepsen 1934
Mammalia - Didelphimorphia - Didelphidae
Peratherium sp. Aymard 1850
    = Didelphidae indet. Gray 1821
Alroy 2002
see common names

Geography
Country:United States State/province:Wyoming County:Natrona
Coordinates: 43.2° North, 107.1° West (view map)
Paleocoordinates:44.8° North, 98.4° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Eocene
Stage:Priabonian 10 m.y. bin:Cenozoic 3
*Period:Tertiary
Key time interval:Chadronian
Age range of interval:37.20000 - 33.90000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:White River
Local section:WRGWY Local bed:1
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Taxonomic list comments:0-25 m
Metadata
Also known as:Dry Hole Quarry (21.3 m); Low Red Quarry (18.3 m)
Database number:16960
Authorizer:J. Alroy, J. Marcot, P. Holroyd Enterer:J. Alroy, J. Marcot, P. Holroyd
Modifier:J. Alroy Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2007-04-24 21:14:31
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

1442. 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]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
24143 R. J. Asher, R. J. Emry, and M. C. McKenna. 2005. New material of Centetodon (Mammalia, Lipotyphla) and the importance of (missing) DNA sequences in systematic paleontology. Journal of Vertebrate Paleontology 25(4):911-923 [J. Alroy/J. Alroy]
1034 J. A. Baskin and R. H. Tedford. 1996. Small Arctoid and Feliform Carnivorans. In D. R. Prothero and R. M. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 486-497 [J. Alroy/J. Alroy/J. Marcot]
1450 R. J. Emry and W. W. Korth. 1993. Evolution in Yoderimyinae (Eomyidae: Rodentia), with New Material from the White River Formation (Chadronian) at Flagstaff Rim, Wyoming. Journal of Paleontology 67(6) [J. Alroy/J. Alroy/J. Ju]
1451 R. J. Emry and W. W. Korth. 1996. Cylindrodontidae. In D. R. Prothero, R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America [J. Alroy/J. Alroy/M. Uhen]
57333 R. J. Emry and W. W. Korth. 2007. A new genus of squirrel (Rodentia, Sciuridae) from the mid-Cenozoic of North America. Journal of Vertebrate Paleontology 27(3):693-698 [J. Marcot/J. Marcot]
57381 R. J. Emry and W. W. Korth. 2012. Early Chadronian (late Eocene) rodents from the Flagstaff Rim area, central Wyoming. Journal of Vertebrate Paleontology 32(2):419-432 [J. Marcot/J. Marcot]
87100 R. J. Emry and W. W. Korth. 2013. The eomyid rodent Paradjidaumo Burke from the late Eocene White River Formation, Flagstaff Rim area, Wyoming. Proceedings of the Biological Society of Washington 126(2):178-186 [P. Holroyd/P. Holroyd]
2153 W. W. Korth, J. H. Wahlert, and R. J. Emry. 1991. A New Species of Heliscomys and Recognition of the Family Heliscomyidae (Geomyoidea: Rodentia). Journal of Vertebrate Paleontology 11(2):247-256 [J. Alroy/J. Alroy/J. Marcot]
2211 A. V. Lavrov and R. J. Emry. 1998. Hyaenodon venturae (Hyaenodontidae, Creodonta, Mammalia) from the early Chadronian (latest Eocene) of Wyoming. Journal of Paleontology 72(4):752-757 [J. Alroy/J. Alroy/J. Alroy]
19699 S. G. Lucas and R. J. Emry. 2004. The entelodont Brachyhyops (Mammalia, Artiodactyla) from the Upper Eocene of Flagstaff Rim, Wyoming. New Mexico Museum of Natural History and Science Bulletin 26:97-100 [J. Alroy/J. Alroy]
6270 M. S. Stevens and J. B. Stevens. 1996. Merycoidodontinae and Miniochoerinae. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 498-573 [J. Alroy/J. Alroy/J. Alroy]