Railroad Canyon: Barstovian, Idaho

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Heteromyidae
Heteromyidae indet. Gray 1868
Mammalia - Rodentia - Castoridae
Mesogaulus sp. Riggs 1899
    = Castoridae indet. Gray 1821
Alroy 2002
Mammalia - Lagomorpha - Leporidae
Leporidae indet. Fischer de Waldheim 1817
this may include Hypolagus gidleyi of White 1988 from "Railroad Canyon" (state not specified, and said to be Blancan)
Mammalia - Lagomorpha - Ochotonidae
Ochotona sp. Link 1795
    = Ochotonidae indet. Thomas 1897
Alroy 2002
Mammalia - Talpidae
Talpidae indet. (Fischer de Waldheim 1817)
Mammalia - Perissodactyla - Rhinocerotidae
Rhinocerotidae indet. Gray 1821
Mammalia - Perissodactyla - Equidae
Parahippus sp. (Leidy 1858)
    = Equidae indet. Gray 1821
Alroy 2002
Archaeohippus minimus (Douglass 1899)
Hypohippus sp. (Leidy 1858)
original and current combination Anchitherium (Hypohippus)
Merychippus seversus (Cope 1878)
    = Equinae indet. Steinmann and Döderlein 1890
Alroy 2002
Merychippus isonesus (Cope 1889)
recombined as Acritohippus isonesus
Mammalia - Tayassuidae
Dyseohyus sp. Stock 1937
    = Tayassuidae indet. Palmer 1897
Alroy 2002
Cynorca sp. Cope 1867
Mammalia - Camelidae
Aepycamelus sp. Macdonald 1956
Mammalia - Palaeomerycidae
Dromomeryx sp. Douglass 1909
Mammalia - Antilocapridae
Cosoryx sp. Leidy 1869
Mammalia - Merycoidodontidae
Ticholeptus hypsodus Loomis 1924
    = Ticholeptus zygomaticus Cope 1878
Kelly and Lander 1988
includes type of "Ticholeptus hypsodus leadorensis": Schultz and Falkenbach 1968 from "1 mi. W. of Continental Divide 20' below top of exposure in Tunnel Draw, Railroad Canyon, Lemhi County"; Schultz and Falkenbach's identification is repeated without comment by Nichols
Merychyus sp. Leidy 1858
    = Merychyus elegans Leidy 1858
Kelly and Lander 1988
replaces ID of Schultz and Falkenbach 1968 from "Railroad Canyon, W. of Tunnel Draw, Lemhi County" and "M.
Brachycrus sp. (Matthew 1901)
Schultz and Falkenbach 1968
invalid subgroup of Merycochoerus
from "Railroad Canyon, near Tunnel Draw, Lemhi County" and "B. sp." of Nichols; said by Kelly and Lander 1988 to be "B. laticeps"
Mammalia - Carnivora - Amphicyonidae
Amphicyon sp. Lartet 1836
    = Amphicyonidae indet. Haeckel 1886
Alroy 2002
Mammalia - Carnivora - Canidae
Canidae indet. Fischer de Waldheim 1817
see common names

Geography
Country:United States State/province:Idaho County:Lemhi
Coordinates: 45.0° North, 113.6° West (view map)
Paleocoordinates:45.7° North, 110.4° West
Basis of coordinate:based on political unit
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5
*Period:Tertiary
Key time interval:Barstovian
Age range of interval:15.97000 - 13.60000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Railroad Canyon Beds Member:uppermost
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments:Nichols' list includes so many invalid names that it must be considered suspect
"geomyid" apparently comes from a much lower part of the section

"Merycodus sp." seems dubious because Nichols goes on to list Cosoryx later in the list, after the tayassuids, which suggests they are the same thing
Metadata
Database number:19013
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:1998-10-13 00:00:00 Last modified:2009-12-20 12:59:35
Access level:the public Released:1998-10-13 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

2653. R. Nichols. 1998. Idaho Museum of Natural History Occasional Paper 36:10-12 [J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
2070 T. S. Kelly and E. B. Lander. 1988. Biostratigraphy and Correlation of Hemingfordian and Barstovian Land Mammal Assemblages, Caliente Formation, Cuyama Valley Area, California. In W. J. M. Bazeley (ed.), Tertiary Tectonics and Sedimentation in the Cuyama Basin, San Luis Obispo, Santa Barbara, and Ventura Counties, California 1-19 [J. Alroy/J. Alroy/J. Marcot]
3069 C. B. Schultz and C. H. Falkenbach. 1968. The Phylogeny of the Oreodonts. Part 1: Merycoidodontinae, Eporeodontinae, and Leptaucheniinae, Three Subfamilies Of Oreodonts, With an Appendix to the Revision Of The Merycoidodontidae, and Part 2. Summary and Conclusions Concerning the Merycoidodontidae. Bulletin of the American Museum of Natural History 139:1-498 [J. Alroy/J. Alroy/J. Marcot]