Also known as MV 7721, MV 7722, MV 7723, MV 7726, MV 7734, MV 7745
Where: Beaverhead County, Montana (45.0° N, 112.8° W: paleocoordinates 46.6° N, 104.7° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: upper Member (Sage Creek Formation), Orellan (33.9 - 33.3 Ma)
Environment/lithology: terrestrial
Primary reference: A. R. Tabrum, D. R. Prothero, and D. Garcia. 1996. Magnetostratigraphy and biostratigraphy of the Eocene-Oligocene transition, southwestern Montana. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 278-311 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 17090: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Clint Boyd and Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
from two collections 10 m apart according to Wood, which matches discussion of Tabrum et al. 1996
stratigraphic nomenclature supersedes that of Hough 1955
Mammalia | |
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Brachygaulus nicholsi n. sp.2, Brachygaulus nicholsi1, Disallomys intermedius1, Ninamys annectens1, Prosciurinae indet.
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Scottimus sp., Wilsoneumys focarius n. sp.1, Eumys aff. brachyodus, Eumys cf. cricetodontoides1, Eumys cf. parvidens, Willeumys viduus1
Scottimus sp. Wood 1937 mouse
Eumys aff. brachyodus Wood 1937 mouse
Eumys cf. parvidens Wood 1937 mouse | |
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Adjidaumo minimus Matthew 1903 rodent | |
Ischyromys sp. Leidy 1856 rodent | |
Megalagus cf. turgidus Cope 1873 rabbit
"Palaeolagus" cf. burkei Schlaikjer 1935 rabbit | |
Ocajila cf. makpiyahe Macdonald 1963 hedgehog | |
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Oligoryctes cf. altitalonidus Clark 1936 placental | |
Domnina aff. gradata Cope 1873 shrew | |
Palaeogale sectoria Gervais 1848 carnivoran | |
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"Merycoidodon cf. culbertsoni" = Merycoidodon culbertsonii, ? Miniochoerus sp.
"Merycoidodon cf. culbertsoni" = Merycoidodon culbertsonii Leidy 1848 oreodont
? Miniochoerus sp. Schultz and Falkenbach 1956 oreodont | |
? Hendryomeryx sp. Black 1978 ruminant | |
? Elomeryx sp. Marsh 1894 anthracothere | |
Poebrotherium sp. Leidy 1847 camel | |
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"Nanodelphys hunti" = Nanodelphys huntii
"Nanodelphys hunti" = Nanodelphys huntii Cope 1873 marsupial | |
Herpetotherium fugax Cope 1873 marsupial includes "H. sp." of Korth 1994; "Didelphidectes pumilis" of Hough 1961; and probably "Peratherium" of Wood 1937
Copedelphys cf. stevensoni Cope 1873 marsupial |