Also known as UCM 79041, 79042, 81023; CM 34; MS9-U3, MS9-U6; Alkali Creek; Sullivan Ranch; Pilgrim Creek; Guthrie Locality 1; 5 mi NW of Arminto
Where: Natrona County, Wyoming (43.2° N, 107.3° W: paleocoordinates 46.9° N, 93.1° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Lost Cabin Member (Wind River Formation), Bridgerian (50.3 - 46.2 Ma)
• said to be Gardnerbuttean
•mostly from the "dark red stratum," but apparently at a much higher level than the "dark red stratum" at Buck Spring
•UCM 81023/MS9-U3 is from immediately below UCM 79042/MS9-U6, which are in the dark red stratum (Stucky and Hardy 2007)
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial-lacustrine; gray, red mudstone
Size class: macrofossils
Reposited in the CM, UCM
• includes 1931 Princeton University collections from NW of Arminto
Primary reference: R. K. Stucky. 1984. Revision of the Wind River faunas, early Eocene of central Wyoming. Part 5. Geology and biostratigraphy of the upper part of the Wind River Formation, northeastern Wind River Basin. Annals of Carnegie Museum 53(9):231-294 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 16207: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Matthew Carrano
Creative Commons license: CC BY (attribution)
Taxonomic list
•"Ectypodus sp." at CM 34 Pilgrim Creek: Krishtalka et al. 1982; according to Stucky (pers. comm.) this is not Davis Ranch
Mammalia | |
Bathyopsis fissidens Cope 1881 uintathere | |
Palaeictops sp. Matthew 1899 eutherian
Palaeictops multicuspis Granger 1910 eutherian | |
Mattimys kalicola Matthew 1918 rodent
Paramys copei Loomis 1907 rodent
Paramys excavatus Loomis 1907 rodent
Acritoparamys francesi Wood 1962 rodent | |
Knightomys huerfanensis Wood 1962 rodent
Knightomys depressus Loomis 1907 rodent
Knightomys senior Gazin 1952 rodent | |
Uintasorex cf. parvulus Matthew 1909 primate
Microsyops cf. scottianus Cope 1881 primate | |
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Absarokius abbotti1, Anemorhysis natronensis n. sp.2, Trogolemur fragilis n. sp.2, Trogolemur amplior n. sp.2, Shoshonius cooperi
Shoshonius cooperi Granger 1910 tarsier | |
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Hyrachyus cf. eximius Leidy 1871 odd-toed ungulate | |
Selenaletes scopaeus Radinsky 1966 odd-toed ungulate apparently the type but provenance is uncertain: Radinsky 1966a
Heptodon posticus Cope 1882 odd-toed ungulate | |
Hyracotherium vasacciense Cope 1872 odd-toed ungulate | |
Orohippus sp. Marsh 1872 horse | |
Ectocion superstes Granger 1915 condylarth
Phenacodus vortmani Cope 1880 condylarth | |
Bunophorus sinclairi n. sp.5 Guthrie 1966 even-toed ungulate see also Stucky and Krishtalka 1990; includes type of "B. gazini"
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Antiacodon vanvaleni n. sp.
Antiacodon vanvaleni n. sp. Guthrie 1971 even-toed ungulate | |
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Creodonta indet. Cope 1875 creodont | |
Malfelis badwaterensis n. gen. n. sp.10 Stucky and Hardy 2007 creodont UCM locality 81023, below dark red stratum
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Limnocyon sp. Marsh 1872 creodont
Prolimnocyon antiquus Matthew and Granger 1915 creodont
Didelphodus cf. altidens Marsh 1872 creodont | |
Hyaenodontidae indet. Leidy 1869 creodont | |
Didymictis altidens Cope 1880 placental
Viverravus lutosus Gazin 1952 placental
Viverravus cf. gracilis Marsh 1872 placental | |
cf. Oodectes sp. Wortman 1901 placental
Miacis cf. latidens Matthew and Granger 1915 placental
Miacis cf. exiguus Matthew and Granger 1915 placental
Miacis cf. parvivorus Cope 1872 placental | |
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Vulpavus canavus Cope 1881 placental | |
"Pentapassalus woodi" = Tubulodon woodi Guthrie 1967 placental | |
Mesonychidae indet. Cope 1875 condylarth | |
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Apatemys cf. bellulus Marsh 1872 eutherian | |
Palaeosinopa didelphoides Cope 1881 eutherian | |
Trogosus sp. Leidy 1871 tillodont
Esthonyx acutidens Cope 1881 tillodont | |
Peratherium comstocki, "Copedelphys innominata" = Herpetotherium innominatum1, Herpetotherium marsupium1
Peratherium comstocki Cope 1884 marsupial | |
Armintodelphys dawsoni Krishtalka and Stucky 1983 marsupial | |
Reptilia | |
"Ototriton minor n. sp." = Jepsibaena minor4
"Ototriton minor n. sp." = Jepsibaena minor4 Gilmore and Jepsen 1945 worm lizard PU 13460 (holotype), a skull lacking much of its roof and articulated lower jaws
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Scenopagus | |
Scenopagus sp. McKenna and Simpson 1959 |