Bear Creek (Lower Nodular Zone) (Oligocene of the United States)
Where: Pennington County, South Dakota (43.9° N, 102.4° W: paleocoordinates 45.0° N, 94.2° W)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Scenic Member (Brule Formation), Orellan (33.9 - 33.3 Ma)
• member-level stratigraphic resolution
Environment/lithology: fluvial; siliciclastic sediments
Size class: macrofossils
Collection methods: Princeton University collection
Primary reference: W. J. Sinclair. 1924. The Faunas of the Concretionary Zones of the Oreodon Beds, White River Oligocene. Proceedings of the American Philosophical Society 63(1):94-133 [J. Alroy/J. Alroy/J. Marcot]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 17133: authorized by John Alroy, entered by John Alroy on 26.03.1995
Creative Commons license: CC BY (attribution)
Taxonomic list
• much of the collection is from NE side of Bear Creek, 4.5 mi NE of Scenic, Pennington County, and exposures from there to Chamberlain Pass; I have removed records that definitely do not pertain to Bear Creek
4.5 mi NE of Scenic locality is Princeton locality 1016E2A, same as original Bear Creek LNZ locality of Culbertson: Sinclair 1922b
NISP 144, but this may include material from other localities
"Cynodictis gregarius" is present only at Corral Draw (see)
Archaeotherium "? crassum" and A. "wanlessi" are probably the Indian Creek specimens described by Sinclair 1922a
Poebrotherium "andersoni" is from Corral Draw (see)
4.5 mi NE of Scenic locality is Princeton locality 1016E2A, same as original Bear Creek LNZ locality of Culbertson: Sinclair 1922b
NISP 144, but this may include material from other localities
"Cynodictis gregarius" is present only at Corral Draw (see)
Archaeotherium "? crassum" and A. "wanlessi" are probably the Indian Creek specimens described by Sinclair 1922a
Poebrotherium "andersoni" is from Corral Draw (see)
Show authors, comments, and common names
| Mammalia | |
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Hoplophoneus primaevus Leidy and Owen 1851 false sabre-tooth apparently the one of three specimens that is not described
Dinictis felina Leidy 1854 false sabre-tooth | |
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Daphoenus hartshornianus Cope 1873 bear-dog | |
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Hyaenodon crucians Leidy 1853 creodont | |
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Archaeotherium mortoni Leidy 1850 even-toed ungulate at Bear Creek: from LNZ at Princeton 1016E2A, see Sinclair 1922b; also mentioned by Sinclair 1922a
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Poebrotherium sp. Leidy 1847 camel | |
"Oreodon gracilis" = Miniochoerus gracilis, Miniochoerus affinis, "Eporeodon bullatus" = Merycoidodon bullatus, "Oreodon culbertsoni" = Merycoidodon culbertsonii
"Oreodon gracilis" = Miniochoerus gracilis Leidy 1851 oreodont
Miniochoerus affinis Leidy 1869 oreodont one of several dozen "O. culbertsoni" specimens of Sinclair 1924, from Princeton locality 1016E, Bear Creek, Brule Zone A
"Eporeodon bullatus" = Merycoidodon bullatus Leidy 1869 oreodont
"Oreodon culbertsoni" = Merycoidodon culbertsonii Leidy 1848 oreodont "Oreodon culbertsoni culbertsoni": from Bear Creek; also "O. culbertsoni periculorum" Schultz and Falkenbach 1968; referred to "Genetochoerus periculorum" by Schultz and Falkenbach 1968; may include "Paramerycoidodon georgei" Schultz and Falkenbach 1968 "N. of Scenic" Brule Zone A
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Leptomeryx evansi Leidy 1853 ruminant | |
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Agriochoerus antiquus Leidy 1850 agriochoerid | |
"Colodon dakotensis" = Colodon occidentalis
"Colodon dakotensis" = Colodon occidentalis Leidy 1868 tapir | |
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Hyracodon sp. Leidy 1856 odd-toed ungulate LNZ at Bear Creek: no evidence that specifically determinate material was collected here, as all LNZ specimens of Sinclair 1922c are from Corral Draw, Quinn Draw, and Indian Creek (see)
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"Caenopus occidentalis" = Subhyracodon occidentalis
"Caenopus occidentalis" = Subhyracodon occidentalis Leidy 1850 rhinoceros no exact locality, but "C. sp." is at Bear Creek
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"Mesohippus bairdii" = Mesohippus bairdi
"Mesohippus bairdii" = Mesohippus bairdi Leidy 1850 anchitheriine horse at Bear Creek; Forsten 1970a reports M. bairdi from about 1 mi S of Chamberlin Pass in "Zone III" of Clark and Kietzke 1967 and about 2 mi SW of the pass in the LNZ
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"Palaeolagus turgidus" = Megalagus turgidus, Palaeolagus haydeni
"Palaeolagus turgidus" = Megalagus turgidus Cope 1873 rabbit
Palaeolagus haydeni Leidy 1856 rabbit | |
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Ischyromys typus Leidy 1856 rodent | |
"Ictops dakotensis" = Leptictis dakotensis
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| Reptilia | |
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Stylemys nebrascensis Leidy 1851 turtle | |