Roundhouse Rock Gap ( of the United States)
Also known as Mo-104, in part
Where: Morrill County, Nebraska (41.7° N, 103.1° W: paleocoordinates 42.6° N, 97.3° W)
• coordinate based on political unit
When: Brown Siltstone Member (Brule Formation), Arikareean (29.5 - 18.5 Ma)
• Unit A
Environment/lithology: terrestrial
Primary reference: C. C. Swisher. 1982. Stratigraphy and biostratigraphy of the eastern portion of the Wildcat Ridge, western Nebraska. 1-172 [J. Alroy/J. Alroy/J. Marcot]more details
PaleoDB collection 17602: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
• a.k.a. Horn Member of Brule Formation
said to include both the E of and 1/4 mi NW of Roundhouse Rock localities by Schultz and Falkenbach 1968
Roundhouse Rock Ash dated at 28.59 +/- 0.32 Ma by Prothero and Swisher 1992; this is within Unit A based on Tedford et al. 1996
status unclear: Mesoreodon "cheeki" Schultz and Falkenbach 1949: Gering Fm. at "Round House Rock, Pumpkin Creek, Morrill County" "Mesoreodon" megalodon Schultz and Falkenbach 1949: Gering Fm. at "Round House Rock" "Desmatochoerus wyomingensis" Schultz and Falkenbach 1954: "Roundhouse Rock"
Mesoreodon does not range above Gering B, which is not exposed at Roundhouse Rock
said to include both the E of and 1/4 mi NW of Roundhouse Rock localities by Schultz and Falkenbach 1968
Roundhouse Rock Ash dated at 28.59 +/- 0.32 Ma by Prothero and Swisher 1992; this is within Unit A based on Tedford et al. 1996
status unclear: Mesoreodon "cheeki" Schultz and Falkenbach 1949: Gering Fm. at "Round House Rock, Pumpkin Creek, Morrill County" "Mesoreodon" megalodon Schultz and Falkenbach 1949: Gering Fm. at "Round House Rock" "Desmatochoerus wyomingensis" Schultz and Falkenbach 1954: "Roundhouse Rock"
Mesoreodon does not range above Gering B, which is not exposed at Roundhouse Rock
Show authors, comments, and common names
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Palaeogale dorothiae Macdonald 1963 carnivoran | |
Leptauchenia major3, Sespia nitida3, "Desmatochoerus (Paradesmatochoerus) wyomingensis" = Mesoreodon minor2
"Desmatochoerus (Paradesmatochoerus) wyomingensis" = Mesoreodon minor2 Douglass 1903 oreodont Mo-107 and -108
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