Monroe Creek (Type): Monroecreekian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Castoridae
Euhapsis platyceps n. sp. Peterson 1905
from "Upper Monroe Creek beds, near the head of Warbonnet Creek, Sioux Co.": Peterson 1905
Mammalia - Carnivora - Mustelidae
Oligobunis darbyi n. sp. Thorpe 1921
    = Promartes darbyi Thorpe 1921
Thorpe 1921
"Monroe Creek beds... Pine Ridge, 12 miles north of Harrison... on the Warbonnet Ranch"; see also Riggs 1945
Mammalia - Carnivora - Amphicyonidae
Mammacyon sp. Loomis 1936
Hunt 1998
"Monroe Creek Formation, Warbonnet Creek"
Canidae indet. Fischer de Waldheim 1817
may include "Nothocyon lemur?" and/or "Leptocyon vafer" of Hunt 1985a
    = Delotrochanter petersoni Hunt 2011
Hunt 2011
"Family Canidae, gen. et sp. indet: Peterson, 1907: 33–34, fig. 6."
Mammalia - Merycoidodontidae
Phenacocoelus typus n. sp. Peterson 1907
"head of Squaw Creek" (actually head of Warbonnet Creek, see Schultz and Falkenbach 1950); formational assignment follows Hunt 1985a; may include "? Mesoreodon" of Peterson 1905; includes "Phenacocoelus munroensis" type of Peterson 1928b from "head of Warbonnet Creek" (clearly from the same locality as P. typus)
Promerycochoerus carrikeri n. sp. Peterson 1907
provenance confirmed by Hunt 1985 contra Schultz and Falkenbach 1949; "head of Warbonnet Creek" according to the latter
Mammalia - Camelidae
Miotylopus gibbi (Loomis 1911)
Prothero 1996
"Head of Warbonnet Creek, Sioux County"; this may include Peterson's provisionally referred "Protomeryx cedrensis"
see common names

Geography
Country:United States State/province:Nebraska County:Sioux
Coordinates: 42.4° North, 103.8° West (view map)
Paleocoordinates:43.3° North, 98.0° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Oligocene
Stage:Chattian 10 m.y. bin:Cenozoic 4
*Period:Tertiary
Key time interval:Monroecreekian
Age range of interval:24.70000 - 23.10000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Monroe Creek
Local section:PineR Local bed:12
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments:"upper" beds only; Peterson's "lower" beds are probable Gering equivalents (see Lower Arikaree Group), although he also shows 200 feet of "Gering Beds" below his 300 feet of "Monroe Creek Beds"
see Hunt 1985a
Metadata
Database number:17565
Authorizer:J. Alroy, J. Marcot Enterer:J. Alroy, J. Marcot
Modifier:J. Alroy Research group:vertebrate
Created:1995-03-26 00:00:00 Last modified:2011-04-21 20:03:51
Access level:the public Released:1995-03-26 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
2751. O. A. Peterson. 1907. The Miocene Beds of Western Nebraska and Eastern Wyoming and Their Vertebrate Faunae. Annals of Carnegie Museum 4(3):21-72 [J. Alroy/J. Alroy/J. Marcot]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1977 R. M. Hunt, Jr. 1998. Amphicyonidae. 196-227 [J. Alroy/J. Alroy/J. Alroy]
52421 R. M. Hunt, Jr. 2011. Evolution of Large Carnivores During the Mid-Cenozoic of North America: The Temnocyonine Radiation (Mammalia, Amphicyonidae). Bulletin of the American Museum of Natural History 358:1-153 [J. Marcot/J. Marcot]
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]
3409 M. R. Thorpe. 1921. Two new fossil Carnivora. American Journal of Science 1(6):477-483 [J. Alroy/J. Alroy/J. Marcot]