Where: Sweetwater County, Wyoming (41.0° N, 110.2° W: paleocoordinates 43.9° N, 99.1° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Bridger Formation, Middle Eocene (47.8 - 37.7 Ma)
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; lithology not reported
Size class: mesofossils
Collected by O. C. Marsh, J. Carter in 1871; reposited in the YPM
Collection methods: surface (in situ),
Primary reference: O. C. Marsh. 1872. Notice of some new Tertiary and post-Tertiary birds. The American Journal of Science and Arts, series 3 4(19-24):256-262 [M. Carrano/M. Carrano]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 81455: authorized by Mark Uhen, entered by Mark Uhen on 24.06.2008, edited by Matthew Carrano, Roger Benson, Philip Mannion, Terri Cleary, Evangelos Vlachos, Bethany Allen and Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
| Mammalia | |
"Uintacyon vorax n. sp." = Miacis vorax3
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"Hyrachyus agrarius" = Hyrachyus modestus3
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Orohippus agilis n. sp.1
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| Reptilia | |
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"Chisternon undatum" = Chisternon undatum3 Leidy 1871 turtle An isolated vertebra, from Henry's Fork of Green River, looks as if it might be the first sacral of Chisternon undatum.
Baena arenosa3 Leidy 1870 turtle A third and less perfect specimen of the shell of Baena arenosa, consisting of the central portion of the carapace and nearly the corresponding portion with the anterior extremity of the plastron, was found by Dr. Carter on Henry's Fork of Green River, and presented by him to the Academy of Natural Sciences. A fourth specimen referable to Baeiia arenosa consists of a small portion of the carapace with a large portion of the plastron, from Henry's Fork of Green River, found by Dr. Carter, and presented by him to the Academy of Natural Sciences of Philadelphia.
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Tinosaurus lepidus n. sp.4, "Thinosaurus crassus n. sp." = Saniwa ensidens4, "Thinosaurus agilis n. sp." = Saniwa ensidens4
"Thinosaurus crassus n. sp." = Saniwa ensidens4 Leidy 1870 squamates (AKA Thinosaurus crassus) YPM 610 (holotype), five dorsal vertebrae, a few fragmentary parts of vertebrae, shaft of a right humerus - "horizon C or higher"
"Thinosaurus agilis n. sp." = Saniwa ensidens4 Leidy 1870 squamates (AKA Thinosaurus agilis) YPM 609 (holotype), dentary with one tooth, four vertebrae, distal femur, distal phalanx - "horizon C or higher"
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Glyptosaurus sphenodon n. sp.4, Oreosaurus lentus n. sp.4, Oreosaurus gracilis n. sp.4, Oreosaurus minutus n. sp.4, Oreosaurus microdus n. sp.4
Glyptosaurus sphenodon n. sp.4 Marsh 1872 squamates YPM 1051 (holotype), small portion of right maxilla with two complete teeth - "horizon C or higher"
Oreosaurus gracilis n. sp.4 Marsh 1872 squamates YPM 1055 (holotype), anterior half of right dentary
Oreosaurus minutus n. sp.4 Marsh 1872 squamates YPM 1058 (holotype), anterior of dentary with 1 tooth
Oreosaurus microdus n. sp.4 Marsh 1872 squamates YPM 1056 (holotype), median part of dentary, one head scute, fragment of vertebra
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Iguanavus exilis n. gen. n. sp.4
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| Aves | |
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Lithornithidae indet.2 Houde 1988 bird YPM 883 (poorly preserved distal end of a tibiotarsus) - collected by Hunting and Chew in 1873
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Uintornis lucaris n. gen. n. sp.
Uintornis lucaris n. gen. n. sp. Marsh 1872 woodpecker | |
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Aletornis gracilis n. sp. Marsh 1872 crane
Aletornis pernix n. sp. Marsh 1872 crane
Aletornis venustus n. sp. Marsh 1872 crane | |
Eoceornis ardetta n. gen. n. sp.6
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| Reptilia | |
"Crocodilus aptus" = Crocodylus aptus5
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