Dirty Creek Flats: Chadronian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Ischyromyidae
? Leptotomus sp. Matthew 1910
Ischyromys veterior Matthew 1903
Mammalia - Rodentia - Aplodontidae
Prosciurus vetustus (Matthew 1903)
original and current combination Sciurus (Prosciurus) vetustus
Mammalia - Rodentia - Sciuridae
Protosciurus sp. Black 1963
    = Sciuridae indet. Gray 1821
Alroy 2002
Mammalia - Rodentia - Eomyidae
Adjidaumo minutus (Cope 1873)
Mammalia - Rodentia - Cylindrodontidae
Pseudocylindrodon neglectus Burke 1935
Mammalia - Lagomorpha - Leporidae
Palaeolagus temnodon Douglass 1902
Megalagus brachyodon (Matthew 1903)
Mammalia - Micropternodontidae
Micropternodus borealis Matthew 1903
Mammalia - Perissodactyla - Brontotheriidae
Brontotheriidae indet. (Marsh 1873)
Mammalia - Perissodactyla - Hyracodontidae
Hyracodon nebraskensis (Leidy 1850)
probably OK because Ostrander also recognizes H. priscidens
Mammalia - Perissodactyla - Equidae
Mesohippus sp. Marsh 1875
    = Equidae indet. Gray 1821
Alroy 2002
Mammalia - Tayassuidae
Perchoerus sp. Leidy 1869
    = Tayassuidae indet. Palmer 1897
Alroy 2002
Mammalia - Camelidae
Poebrotherium sp. Leidy 1847
Mammalia - Entelodontidae
Archaeotherium sp. Leidy 1850
Mammalia - Protoceratidae
Pseudoprotoceras longinaris Cook 1934
Mammalia - Hypisodontidae
Hypisodus minimus (Cope 1873)
Mammalia - Leptomerycidae
Leptomeryx sp. Leidy 1853
Mammalia - Merycoidodontidae
Merycoidodon sp. Leidy 1848
Mammalia - Carnivora - Amphicyonidae
Daphoenictis sp. Hunt 1974
Mammalia - Carnivora - Canidae
Hesperocyon sp. Scott 1890
see common names

Geography
Country:United States State/province:Nebraska County:Sioux
Coordinates: 42.4° North, 103.8° West (view map)
Paleocoordinates:43.8° North, 95.1° 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:Chadron Member:Peanut Peak
Local section:PineR Local bed:1
Local order:bottom to top
Stratigraphy comments: member assignment based on LaGarry pers. commun. 19 May 2005
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments:NE 1/4 sec 26 T33N R53W
Metadata
Database number:16940
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2005-05-19 12:55:13
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

2716. G. E. Ostrander. 1985. Correlation of the early Oligocene (Chadronian) in northwestern Nebraska. Dakoterra 2(2):205-231 [J. Alroy/J. Alroy/P. Holroyd]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]