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
| |
Mammalia | |
Palaeictops sp. Matthew 1899 eutherian
Palaeictops multicuspis Granger 1910 eutherian | |
Apatemys cf. bellulus Marsh 1872 eutherian | |
Esthonyx acutidens Cope 1881 tillodont
Trogosus sp. Leidy 1871 tillodont | |
Palaeosinopa didelphoides Cope 1881 eutherian | |
| |
"Pentapassalus woodi" = Tubulodon woodi Guthrie 1967 placental | |
Creodonta indet. Cope 1875 creodont | |
Malfelis badwaterensis n. gen. n. sp.10 Stucky and Hardy 2007 creodont UCM locality 81023, below dark red stratum
| |
Limnocyon sp. Marsh 1872 creodont
Prolimnocyon antiquus Matthew and Granger 1915 creodont
Didelphodus cf. altidens Marsh 1872 creodont | |
Hyaenodontidae indet. Leidy 1869 creodont | |
cf. Oodectes sp. Wortman 1901 placental | |
Viverravus cf. gracilis Marsh 1872 placental
Viverravus lutosus Gazin 1952 placental
Didymictis altidens Cope 1880 placental | |
| |
Miacis cf. latidens Matthew and Granger 1915 placental
Miacis cf. parvivorus Cope 1872 placental
Miacis cf. exiguus Matthew and Granger 1915 placental
Vulpavus canavus Cope 1881 placental | |
Mesonychidae indet. Cope 1875 condylarth | |
Phenacodus vortmani Cope 1880 condylarth
Ectocion superstes Granger 1915 condylarth | |
| |
Hyracotherium vasacciense Cope 1872 odd-toed ungulate | |
Orohippus sp. Marsh 1872 horse | |
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 | |
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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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Mattimys kalicola Matthew 1918 rodent
Acritoparamys francesi Wood 1962 rodent
Paramys copei Loomis 1907 rodent
Paramys excavatus Loomis 1907 rodent | |
Knightomys senior Gazin 1952 rodent
Knightomys huerfanensis Wood 1962 rodent
Knightomys depressus Loomis 1907 rodent | |
| |
Shoshonius cooperi, Absarokius abbotti1, Anemorhysis natronensis n. sp.2, Trogolemur fragilis n. sp.2, Trogolemur amplior n. sp.2
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 | |
"Copedelphys innominata" = Herpetotherium innominatum1, Herpetotherium marsupium1, Peratherium comstocki
Peratherium comstocki Cope 1884 marsupial | |
Bathyopsis fissidens Cope 1881 uintathere | |
Scenopagus | |
Scenopagus sp. McKenna and Simpson 1959 |