Tunnel Hill: Harrisonian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Camelidae
Protomeryx leonardi Loomis 1911
Skinner et al. 1968
recombined as Miotylopus leonardi
"Monroe Creek-Harrison sequence in the vicinity of the Tunnel Hill locality" (1 measurement)
Mammalia - Merycoidodontidae
Merychyus siouxensis Loomis 1924
Skinner et al. 1968
synonym of Paramerychyus harrisonensis
"vicinity" of Tunnel Hill in the Harrison Fm., but this is a field attribution
Pseudocyclopidius lullianus (Thorpe 1921)
Schultz and Falkenbach 1968
recombined as Leptauchenia lullianus
"Pseudocyclopidius lullianus expiratus": "Ledingham Ranch" in supposed "upper Monroe Creek"
Pithecistes copei Schultz and Falkenbach 1968
Schultz and Falkenbach 1968
synonym of Leptauchenia decora
"upper part of Monroe Creek Formation... Tunnel Hill locality, Ledingham Ranch"
Megoreodon hollandi (Douglass 1907)
Skinner et al. 1968
synonym of Megoreodon grandis
"M. grandis loomisi" of Schultz and Falkenbach 1954; middle of local sequence at Tunnel Hill
Mammalia - Carnivora - Canidae
Enhydrocyon pahinsintewakpa (Macdonald 1963)
3/4 NW of Ledingham Ranch; Tunnell Hill sensu stricto
"Mesocyon" temnodon (Wortman and Matthew 1899)
see common names

Geography
Country:United States State/province:Nebraska County:southern Sioux
Coordinates: 42.4° North, 103.8° West (view map)
Paleocoordinates:43.3° North, 98.8° West
Basis of coordinate:based on political unit
Time
*Period:Tertiary *Epoch:Oligocene
Key time interval:Harrisonian
Age range of interval:24.80000 - 20.43000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Arikaree Formation:Harrison Member:Lower
Local section:NPlat Local bed:8
Local order:bottom to top
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some genera
Reason for describing collection:taxonomic analysis
Taxonomic list comments:North Platte river drainage
status unclear: specimen of Schultz and Falkenbach 1949 tentatively referred to Mesoreodon "cheeki" but also to "M." megalodon; from "Ledingham Ranch"
Metadata
Database number:17704
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:M. Carrano Research group:vertebrate
Created:1994-04-30 00:00:00 Last modified:2015-12-30 13:52:21
Access level:the public Released:1994-04-30 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

6226. X. Wang. 1994. Phylogenetic systematics of the Hesperocyoninae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 221:1-207 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
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]
3174 M. F. Skinner, S. M. Skinner, and R. J. Gooris. 1968. Cenozoic rocks and faunas of Turtle Butte, south-central South Dakota. Bulletin of the American Museum of Natural History 138(7) [J. Alroy/J. Alroy/J. Ju]