Little Muddy Creek (Niobrara County) ( of the United States)
Where: Niobrara County, Wyoming (43.0° N, 104.5° W: paleocoordinates 43.9° N, 98.7° W)
• coordinate based on political unit
When: Arikareean (29.5 - 18.5 Ma)
Environment/lithology: terrestrial
Primary reference: X. Xu. 1996. Castoridae. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 412-432 [J. Alroy/J. Alroy/J. Marcot]more details
PaleoDB collection 17532: authorized by John Alroy, entered by John Alroy on 19.05.2000, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
• Xu 1996 implies that the lower/middle levels are significantly older than the upper level, but separating out the records is impossible given the available literature
Show authors, comments, and common names
Mammalia | |
Capacikala parvus n. sp., Capacikala gradatus
Capacikala parvus n. sp. Xu 1996 beaver "High level of middle brown sand, Little Muddy Creek" (i.e., upper level)
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Phlaocyon minor10, Archaeocyon leptodus10, Otarocyon cooki10, Enhydrocyon pahinsintewakpa9, Ectopocynus antiquus n. sp.9, Ectopocynus intermedius n. sp.9, Philotrox condoni9
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"Pithecistes altageringensis n. sp." = Leptauchenia decora7, "Hadroleptauchenia densa" = Leptauchenia major7, Sespia nitida7, "Mesoreodon megalodon" = Desmatochoerus megalodon5, Desmatochoerus hatcheri6, Pseudodesmatochoerus milleri6, Megoreodon grandis6, "Mesoreodon cheeki" = Mesoreodon minor5, "Desmatochoerus wyomingensis" = Mesoreodon minor2, "Desmatochoerus (Paradesmatochoerus) grangeri n. sp." = Mesoreodon minor6
"Pithecistes altageringensis n. sp." = Leptauchenia decora7 Leidy 1856 oreodont also their "L. parasimus" from "upper Gering"
"Hadroleptauchenia densa" = Leptauchenia major7 Leidy 1856 oreodont includes their "Pseudocyclopidius lullianus"; both from the "upper Gering"
Desmatochoerus hatcheri6 Douglass 1907 oreodont F:AM 33305 holotype of "Desmatochoerus hatcheri geringensis"
"Desmatochoerus (Paradesmatochoerus) grangeri n. sp." = Mesoreodon minor6 Douglass 1903 oreodont F:AM 33303
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"Parablastomeryx falkenbachi" = Pseudoblastomeryx advena1
"Parablastomeryx falkenbachi" = Pseudoblastomeryx advena1 Matthew 1907 musk deer "Little Muddy Creek"
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Diceratherium annectens4 Marsh 1873 rhinoceros "Middle Arikareean, Monroe Creek Formation, 3.5 miles west of Muddy Creek Bridge, Niobrara County, Wyoming"
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