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
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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Mammalia | |
Palaeictops sp., "Palaeictops multicuspis" = Parictops multicuspis
Palaeictops sp. Matthew 1899 eutherian
"Palaeictops multicuspis" = Parictops multicuspis Granger 1910 eutherian | |
Apatemys cf. bellulus Marsh 1872 eutherian | |
Esthonyx acutidens Cope 1881 tillodont
Trogosus sp. Leidy 1871 tillodont | |
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Mesonychidae indet. Cope 1875 condylarth | |
"Pentapassalus woodi" = Tubulodon woodi Guthrie 1967 placental | |
Creodonta indet. Cope 1875 creodont | |
Hyaenodontidae indet. Leidy 1869 creodont | |
Limnocyon sp. Marsh 1872 creodont
Prolimnocyon antiquus Matthew and Granger 1915 creodont | |
Malfelis badwaterensis n. gen. n. sp.10 Stucky and Hardy 2007 creodont UCM locality 81023, below dark red stratum
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Miacis cf. exiguus Matthew and Granger 1915 placental
Miacis cf. latidens Matthew and Granger 1915 placental
Miacis cf. parvivorus Cope 1872 placental
Vulpavus canavus Cope 1881 placental | |
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Viverravus lutosus Gazin 1952 placental
Viverravus cf. gracilis Marsh 1872 placental
Didymictis altidens Cope 1880 placental | |
cf. Oodectes sp. Wortman 1901 placental | |
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Hyracotherium vasacciense Cope 1872 odd-toed ungulate | |
Orohippus sp. Marsh 1872 horse | |
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Selenaletes scopaeus Radinsky 1966 odd-toed ungulate apparently the type but provenance is uncertain: Radinsky 1966a
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Hyrachyus cf. eximius Leidy 1871 odd-toed ungulate | |
Heptodon posticus Cope 1882 odd-toed ungulate | |
Ectocion superstes Granger 1915 condylarth
Phenacodus vortmani Cope 1880 condylarth | |
Antiacodon vanvaleni n. sp.
Antiacodon vanvaleni n. sp. Guthrie 1971 even-toed ungulate | |
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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"Didelphodus cf. altidens" = Centetodon altidens
"Didelphodus cf. altidens" = Centetodon altidens Marsh 1872 placental | |
Palaeosinopa didelphoides Cope 1881 placental | |
Knightomys huerfanensis Wood 1962 rodent
Knightomys senior Gazin 1952 rodent
Knightomys depressus Loomis 1907 rodent | |
Mattimys kalicola Matthew 1918 rodent
Paramys excavatus Loomis 1907 rodent
Paramys copei Loomis 1907 rodent
Acritoparamys francesi Wood 1962 rodent | |
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Shoshonius cooperi Granger 1910 tarsier | |
Microsyops cf. scottianus Cope 1881 primate
Uintasorex cf. parvulus Matthew 1909 primate | |
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Armintodelphys dawsoni Krishtalka and Stucky 1983 marsupial | |
Peratherium comstocki, "Copedelphys innominata" = Herpetotherium innominatum1, Herpetotherium marsupium1
Peratherium comstocki Cope 1884 marsupial | |
Bathyopsis fissidens Cope 1881 uintathere | |
Scenopagus | |
Scenopagus sp. McKenna and Simpson 1959 |