Where: Wheeler County, Oregon (44.9° N, 120.2° W: paleocoordinates 44.7° N, 114.2° W)
• coordinate based on political unit
When: John Day Formation, Early/Lower Hemingfordian (20.4 - 16.0 Ma)
• overlies "? ATR Tuff" dated at 22.6 Ma (AA)
•said to be 20 Ma or younger based on biochronology, i.e., early Hemingfordian
• member-level stratigraphic resolution
Environment/lithology: terrestrial; lithology not reported
Size class: macrofossils
Primary reference: T. Fremd. 1994. John Day Basin paleontology field trip guide and road log: Society of Vertebrate Paleontology. John Day Fossil Beds National Monument 94-1 [J. Alroy/J. Alroy/M. Uhen]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 17925: authorized by John Alroy, entered by John Alroy on 30.04.1994, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
| unclassified | |
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| Mammalia | |
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Mesocyon socialis canid | |
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Paradaphoenus sp. Wortman and Matthew 1899 bear-dog presumably includes type of "Daphoenus minimus" from the "Scenic Member" (Hough 1948)
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"Protapirus robustus" = Nexuotapirus robustus
"Protapirus robustus" = Nexuotapirus robustus Sinclair 1901 tapir | |
Merychyus arenarum, Merycochoerus matthewi, "Hypsiops breviceps" = Hypsiops brachymelis, "Pseudodesmatochoerus longiceps" = Merycoides longiceps
Merychyus arenarum Cope 1884 oreodont
Merycochoerus matthewi Loomis 1924 oreodont
"Hypsiops breviceps" = Hypsiops brachymelis Douglass 1907 oreodont
"Pseudodesmatochoerus longiceps" = Merycoides longiceps Douglass 1907 oreodont | |
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Camelidae indet. Gray 1821 camel | |
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Archaeotherium caninus2 Troxell 1920 even-toed ungulate UCMP 415: specimen number appears in appendix. Taxonomic assignment from UCMP catalog website
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Archaeolagus cf. macrocephalus Matthew 1907 rabbit | |
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Schizodontomys greeni Rensberger 1973 rodent | |
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Entoptychus individens Rensberger 1971 rodent | |