Flagstaff Rim III: Chadronian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
informal Novacek leptictid acutidens
Novacek 2000
pers. commun. 16.2.00: "Frictops emryi"
Mammalia - Rodentia - Ischyromyidae
Titanotheriomys veterior (Matthew 1903)
original and current combination Ischyromys veterior
Mammalia - Rodentia - Aplodontidae
Prosciurus vetustus (Matthew 1903)
original and current combination Sciurus (Prosciurus) vetustus
Mammalia - Rodentia - Sciuridae
? Protosciurus jeffersoni (Douglass 1902)
recombined as Douglassciurus jeffersoni
Mammalia - Rodentia - Eomyidae
Namatomys lloydi Black 1965
this is the "true" Namatomys"
Mammalia - Rodentia - Cylindrodontidae
Cylindrodon natronensis n. sp. Emry and Korth 1996
Emry and Korth 1996
10.7 m below Ash D in Little Lone Tree Gulch; "C. fontis"
Mammalia - Lagomorpha - Leporidae
Chadrolagus emryi Gawne 1978
Palaeolagus temnodon Douglass 1902
Megalagus brachyodon (Matthew 1903)
Mammalia - Geolabididae
Centetodon chadronensis Lillegraven et al. 1981
Mammalia - Oligoryctidae
Apternodus altitalonidus Clark 1936
recombined as Oligoryctes altitalonidus
Mammalia - Apternodontidae
Apternodus brevirostris Schlaikjer 1934
Mammalia - Chiroptera
Chiroptera indet. Blumenbach 1779
a bat
Mammalia - Perissodactyla - Brontotheriidae
Brontotheriidae indet. (Marsh 1873)
Mammalia - Perissodactyla - Rhinocerotidae
? Subhyracodon sp. Wood 1927
? Trigonias sp. Lucas 1900
Caenopus dakotensis Peterson 1920
recombined as Penetrigonias dakotensis
Mammalia - Perissodactyla - Hyracodontidae
Hyracodon cf. priscidens Lambe 1905
see also Prothero 1996e
Mammalia - Perissodactyla - Equidae
Mesohippus sp. Marsh 1875
    = Equidae indet. Gray 1821
Alroy 2002
Mammalia - Camelidae
Poebrotherium sp. Leidy 1847
    = Poebrotherium wilsoni Leidy 1847
Prothero 1996
Mammalia - Entelodontidae
Archaeotherium cf. coarctatum (Cope 1889)
Mammalia - Leptochoeridae
Stibarus sp. Cope 1873
Mammalia - Oromerycidae
Eotylopus reedi Matthew 1910
Mammalia - Protoceratidae
Leptotragulus profectus Matthew 1903
recombined as Trigenicus profectus
Mammalia - Hypisodontidae
Hypisodus sp. Cope 1873
Mammalia - Leptomerycidae
Leptomeryx mammifer Cope 1885
Leptomeryx speciosus Lambe 1908
Mammalia - Merycoidodontidae
Merycoidodon forsythae Schultz and Falkenbach 1968
recombined as Miniochoerus forsythae
Bathygenys alpha Douglass 1902
includes material of Schultz and Falkenbach 1968 from "Middle Fork, Lone Tree Gulch, 35' below ash D" and their "Megabathygenys goorisi" from 34' below Ash D, Little Lone Tree Gulch
Bathygenys alpha Douglass 1902
    = Bathygenys hedlundae Schultz and Falkenbach 1968
Alroy 2002
original and current combination Bathygenys alpha hedlundae
"Bathygenys alpha hedlundae": replaces ID of Schultz and Falkenbach 1968 from 35' below Ash D, North Fork of Lone Tree Gulch
Mammalia - Creodonta - Hyaenodontidae
Hyaenodon crucians Leidy 1853
Hyaenodon montanus Douglass 1902
Mammalia - Carnivora - Nimravidae
Dinictis sp. (Leidy 1854)
Hoplophoneus oharrai Jepsen 1926
Mammalia - Carnivora - Amphicyonidae
Daphoenocyon sp. Hough 1948
    = Brachyrhynchocyon sp. Scott and Jepsen 1936
Alroy 2002
Daphoenictis sp. Hunt 1974
Mammalia - Carnivora - Ursidae
Parictis sp. Scott 1893
assigned to "Subparictis" by Baskin and Tedford 1996
Mammalia - Carnivora - Canidae
Hesperocyon paterculus (Matthew 1903)
synonym of Hesperocyon gregarius
specimens listed by Wang 1994 from "in Ash D" and 40 ft below Ash D
Mammalia - Pholidota - Patriomanidae
Patriomanis americanus Emry 1970
corrected as Patriomanis americana
Mammalia - Epoicotheriidae
Xenocranium sp. Colbert 1942
Epoicotherium cf. unicum (Douglass 1905)
Mammalia - Macroscelidea - Amphilemuridae
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
Geographic resolution:small collection
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:3
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments:54-86 m, Ash B - Ash D
Metadata
Database number:16962
Authorizer:J. Alroy Enterer:J. Alroy
Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2002-06-03 03:27:41
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]
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]
6324 M. J. Novacek. 2000. Personal communication regarding leptictid identifications. [J. Alroy/J. Alroy/J. Alroy]
28055% 6280D. R. Prothero. 1996. Camelidae. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 609-651 [J. Alroy/J. Alroy/J. Marcot]