Brecht Ranch (Eocene of the United States)
Also known as TNAS
Where: Dawes County, Nebraska (42.8° N, 103.1° W: paleocoordinates 44.1° N, 94.3° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Chadron Formation, Chadronian (37.2 - 33.9 Ma)
Environment/lithology: terrestrial
Primary reference: E. P. Gustafson. 1986. Preliminary biostratigraphy of the White River Group (Oligocene, Chadron and Brule formations) in the vicinity of Chadron, Nebraska. Transactions of the Nebraska Academy of Sciences 14:7-20 [J. Alroy/J. Alroy/M. Uhen]more details
PaleoDB collection 16918: authorized by John Alroy, entered by John Alroy on 18.02.1993
Creative Commons license: CC BY (attribution)
Taxonomic list
• includes CSC-55 Bartlett West #1 CSC-92 Rook Ranch lower levels (= UNSM Dw-104: Hunt 1998b) CSC-99 White's south end CSC-26 Hawthorne A CSC-27 Hawthorne B CSC-5 (in part) Schommer Ranch lower level
apparently in the Trunk Butter Member sensu LaGarry and LaGarry 1999
Brecht Ranch, level indeterminate: Paratylopus labiatus Prothero 1996d: presumably Orellan; also at "Morris Ranch"
possibly relevant: Parictis sp. Hunt 1998a: "Chadron Formation, sect. 2, T32N, R52W, Dawes County"
NISP 67, excluding brontotheres
apparently in the Trunk Butter Member sensu LaGarry and LaGarry 1999
Brecht Ranch, level indeterminate: Paratylopus labiatus Prothero 1996d: presumably Orellan; also at "Morris Ranch"
possibly relevant: Parictis sp. Hunt 1998a: "Chadron Formation, sect. 2, T32N, R52W, Dawes County"
NISP 67, excluding brontotheres
Show authors, comments, and common names
| Mammalia | |
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Palaeolagus haydeni Leidy 1856 rabbit | |
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Leptomeryx evansi Leidy 1853 ruminant | |
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Agriochoerus antiquus Leidy 1850 agriochoerid | |
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Hypertragulus calcaratus Cope 1873 ruminant | |
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Pseudoprotoceras longinaris Cook 1934 protoceratid | |
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Archaeotherium mortoni Leidy 1850 even-toed ungulate | |
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Poebrotherium eximium1 Hay 1902 camel "2.5 miles north of Chadron... Brecht Ranch, Morris Ranch - late Chadronian"
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"Merycoidodon culbertsoni" = Merycoidodon (Merycoidodon) culbertsoni, Miniochoerus gracilis, Miniochoerus forsythae2
"Merycoidodon culbertsoni" = Merycoidodon (Merycoidodon) culbertsoni Leidy 1848 oreodont includes "M. culbertsonii browni" and "M. culbertsoni osborni" of Schultz and Falkenbach 1968 from UNSM Dw-104, Chadron C
Miniochoerus gracilis Leidy 1851 oreodont | |
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Hyracodon nebraskensis Leidy 1850 odd-toed ungulate probably OK because Ostrander also recognizes H. priscidens
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Brontotheriidae indet. Marsh 1873 brontothere | |
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Hyaenodon crucians Leidy 1853 creodont | |
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Dinictis felina Leidy 1854 false sabre-tooth | |
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Hesperocyon gregarius Cope 1873 canid specimen from KU-NE-083 "Chadronian" of Walter Brecht Ranch listed by Wang 1994
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Daphoenictis tedfordi, "Daphoenocyon dodgei" = Brachyrhynchocyon dodgei
"Daphoenocyon dodgei" = Brachyrhynchocyon dodgei Scott 1898 bear-dog also present at "Rook Ranch (Dw-104)" and Bartlett Ranch West #1: Hunt 1998b
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