Chadron in Place: Chadronian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Cylindrodontidae
Cylindrodon fontis Douglass 1902
    = Cylindrodon sp. Douglass 1902
Wood 1980
"C. nebraskensis"
Mammalia - Rodentia - Ischyromyidae
Titanotheriomys cf. wyomingensis Wood 1937
    = Ischyromys cf. veterior Matthew 1903
Alroy 2002
Ischyromys pliacus Troxell 1922
    = Ischyromys typus Leidy 1856
Alroy 2002
Mammalia - Carnivora
Pseudaelurus sp. Leidy 1858
    = Carnivora indet. Bowdich 1821
Alroy 2002
not at all clear what this really is
Mammalia - Carnivora - Canidae
Pseudocynodictis paterculus (Matthew 1903)
    = Hesperocyon gregarius Cope 1873
Alroy 2002
Mammalia - Carnivora - Nimravidae
Dinictis sp. (Leidy 1854)
Hoplophoneus mentalis Sinclair 1921
synonym of Hoplophoneus primaevus
Mammalia - Perissodactyla - Equidae
Mesohippus cf. hypostylus Osborn 1904
    = Mesohippus cf. bairdi Leidy 1850
Alroy 2002
Mammalia - Perissodactyla - Brontotheriidae
Brontops brachycephalus (Osborn 1902)
Mammalia - Perissodactyla - Hyracodontidae
Hyracodon nebraskensis (Leidy 1850)
    = Hyracodon sp. Leidy 1856
Alroy 2002
this could easily be H. priscidens
Mammalia - Anthracotheriidae
Bothriodon sp. Aymard 1846
    = Anthracotheriidae indet. Leidy 1869
Alroy 2002
- could be Aepinacodon
Mammalia - Merycoidodontidae
Merycoidodon culbertsoni (Leidy 1848)
original and current combination Merycoidodon culbertsonii
Mammalia - Leptomerycidae
Leptomeryx esulcatus Cope 1889
Leptomeryx evansi Leidy 1853
Mammalia - Dichobunidae
Choeropotamidae indet. Owen 1845
    = Dichobunidae indet. Gill 1872
Alroy 2002
comparisons made to Achaenodon, Parahyus, and Brachyhyops
Mammalia - Camelidae
Poebrotherium sp. Leidy 1847
Mammalia - Tayassuidae
Perchoerus ? probus (Leidy 1856)
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:37.00000 - 33.90000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Local section:PineR Local bed:1
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments:below the lower purple-white layer
Metadata
Database number:16929
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:
1944. J. R. Hough and R. Alf. 1956. A Chadron mammalian fauna from Nebraska. Journal of Paleontology 30(1):132-140 [J. Alroy/J. Alroy/M. Carrano]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
3737 A. E. Wood. 1980. The Oligocene Rodents of North America. Transactions of the American Philosophical Society 70(5):1-68 [J. Alroy/J. Alroy/J. Ju]