Powder Wash (Upper): Bridgerian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Anguidae
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Glyptosaurus sylvestris
Marsh 1871
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Gunnell and Bartels 1999 | |||||||||
Xestops vagans
(Marsh 1872)
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Gunnell and Bartels 1999 | |||||||||
original and current combination Oreosaurus vagans | ||||||||||
Eodiploglossus borealis
Gauthier 1982
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Gunnell and Bartels 1999 | |||||||||
Reptilia
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Saniwa sp.
Leidy 1870
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Gunnell and Bartels 1999 | |||||||||
Booidea indet.
Gray 1825
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Gunnell and Bartels 1999 | |||||||||
Reptilia
- Iguanidae
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Parasauromalus sp.
Gilmore 1928
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Gunnell and Bartels 1999 | |||||||||
Parasauromalus olseni
Gilmore 1928
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Gunnell and Bartels 1999 | |||||||||
Reptilia
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Tinosaurus stenodon
Marsh 1872
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Gunnell and Bartels 1999 | |||||||||
Reptilia
- Xantusiidae
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Palaeoxantusia sp.
Hecht 1956
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Gunnell and Bartels 1999 | |||||||||
spelled "Paleoxantusia" | ||||||||||
Reptilia
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Procaimanoidea kayi
(Mook 1941)
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Gunnell and Bartels 1999 | |||||||||
Pristichampsus vorax
(Troxell 1925)
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Gunnell and Bartels 1999 | |||||||||
recombined as Boverisuchus vorax | ||||||||||
Reptilia
- Testudines
- Trionychidae
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Trionychidae indet.
Gray 1825
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Gunnell and Bartels 1999 | |||||||||
Reptilia
- Testudines
- Geoemydidae
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Echmatemys sp.
Hay 1906
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Gunnell and Bartels 1999 | |||||||||
Reptilia
- Testudines
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Hadrianus sp.
Cope 1872
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Gunnell and Bartels 1999 | |||||||||
Mammalia
- Chiroptera
- Natalidae
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cf. Ageina sp.
Russell et al. 1973
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a bat | ||||||||||
Mammalia
- Condylarthra
- Hyopsodontidae
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Hyopsodus paulus
Leidy 1870
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confirmed by Redline 1997 | ||||||||||
Hyopsodus minusculus
Leidy 1873
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Gazin 1968 | |||||||||
Mammalia
- Primates
- Omomyidae
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Anaptomorphus aemulus
Cope 1872
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Omomys lloydi n. sp.
Gazin 1958
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see Gazin 1958a | ||||||||||
Omomys carteri
Leidy 1869
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Utahia kayi n. sp.
Gazin 1958
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see Gazin 1958a (2 measurements) | ||||||||||
Uintanius ameghini
(Wortman 1904)
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includes one specimen of Utahia kayi: Szalay 1976 | ||||||||||
Mammalia
- Primates
- Microsyopidae
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Microsyops sp.
Leidy 1872
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Uintasorex cf. parvulus
Matthew 1909
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(4 measurements) | ||||||||||
Mammalia
- Primates
- Notharctidae
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Smilodectes gracilis
(Marsh 1871)
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Notharctus cf. tenebrosus
Leidy 1870
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sensu Gingerich 1979a | ||||||||||
Mammalia
- Rodentia
- Ischyromyidae
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Microparamys minutus
(Wilson 1937)
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Paramys delicatus
Leidy 1871
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(1 measurement) | ||||||||||
Pseudotomus robustus
(Marsh 1872)
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= Pseudotomus sp.
Cope 1872
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Korth 1985 | |||||||||
replaces ID of Dawson 1968 | ||||||||||
Mammalia
- Rodentia
- Sciuravidae
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Sciuravidae indet.
Miller and Gidley 1918
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Pauromys sp.
Troxell 1923
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Sciuravus eucristadens
Burke 1937
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includes "Microparamys sp. C" of Wood 1962: see Dawson 1968, Korth 1984 | ||||||||||
Mammalia
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Aethomylos simplicidens
Novacek 1976
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Mammalia
- Pantolestidae
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Pantolestes cf. longicaudus
(Cope 1872)
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Mammalia
- Sespedectidae
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Cryptolestes sp.
Novacek 1976
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= Crypholestes sp.
Novacek 1980
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Alroy 2002 | |||||||||
Mammalia
- Apternodontidae
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"Eoryctes" sp.
Thewissen and Gingerich 1989
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= Apternodontidae indet.
Matthew 1910
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Alroy 2003 | |||||||||
genus name was used sensu Romer 1966, not Thewissen and Gingerich 1989, as noted by Bloch (pers. commun. 30.8.03) | ||||||||||
Mammalia
- Nyctitheriidae
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Scenopagus priscus
(Marsh 1872)
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original and current combination Nyctitherium priscus | ||||||||||
Nyctitherium serotinum
(Marsh 1872)
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described by Krishtalka 1976b (5 measurements) | ||||||||||
Talpavus nitidus
Marsh 1872
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recombined as Nyctitherium nitidum | ||||||||||
Mammalia
- Geolabididae
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Centetodon pulcher
Marsh 1872
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not listed by Lillegraven et al. 1981 | ||||||||||
Centetodon bembicophagus
Lillegraven et al. 1981
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Mammalia
- Acreodi
- Mesonychidae
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Mesonychidae indet.
Cope 1875
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Mammalia
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? Oodectes sp.
Wortman 1901
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Mammalia
- Viverravidae
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Viverravus minutus
Wortman 1901
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Viverravus gracilis
Marsh 1872
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Viverravus sicarius
Matthew 1909
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Mammalia
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Miacis cf. gracilis
Clark 1939
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= Procynodictis cf. vulpiceps
Wortman and Matthew 1899
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Gunnell 1998 | |||||||||
"Tritemnodon cf. | ||||||||||
Miacis cf. parvivorus
Cope 1872
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Mammalia
- Carnivora
- Miacidae
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Miacidae indet.
Cope 1880
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said to be a new genus | ||||||||||
Uintacyon major
Matthew 1909
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= Miocyon cf. major
Matthew 1909
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Alroy 2002 | |||||||||
Mammalia
- Creodonta
- Hyaenodontidae
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Tritemnodon cf. whitiae
(Cope 1882)
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= Tritemnodon cf. agilis
Marsh 1872
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Gunnell 1998 | |||||||||
Sinopa minor
Wortman 1902
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= Sinopa rapax
Leidy 1871
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Alroy 2002 | |||||||||
Sinopa grangeri
Matthew 1906
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= Sinopa major
Wortman 1902
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Alroy 2002 | |||||||||
Proviverroides sp.
Bown 1982
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= Proviverroides cf. piercei
Bown 1982
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Gunnell 1998 | |||||||||
Mammalia
- Creodonta
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Limnocyon cf. verus
Marsh 1872
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Mammalia
- Homacodontidae
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Homacodontinae indet.
(Marsh 1849)
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original and current combination Homacodontidae | ||||||||||
said to be new | ||||||||||
Antiacodon pygmaeus
(Cope 1872)
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includes "cf. Neodiacodexis sp." of West 1984 according to Stucky 1998; see also Burke 1969 (1 measurement) | ||||||||||
Mammalia
- Perissodactyla
- Palaeotheriidae
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Hyracotherium vasacciense
(Cope 1872)
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Mammalia
- Perissodactyla
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Helaletes nanus
(Marsh 1871)
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Mammalia
- Perissodactyla
- Hyrachyidae
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Hyrachyus modestus
(Leidy 1870)
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Mammalia
- Esthonychidae
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Trogosus sp.
Leidy 1871
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Mammalia
- Apatemyidae
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Apatemys cf. bellus
Marsh 1872
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Apatemys cf. bellulus
Marsh 1872
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Apatemys cf. rodens
Troxell 1923
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Mammalia
- Proteutheria
- Palaeoryctidae
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Palaeoryctinae indet.
Winge 1917
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Mammalia
- Leptictidae
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Palaeictops bridgeri
(Simpson 1959)
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Mammalia
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Peradectes chesteri
(Gazin 1952)
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(4 measurements) | ||||||||||
Armintodelphys dawsoni
Krishtalka and Stucky 1983
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Peratherium innominatum
Simpson 1928
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(6 measurements) | ||||||||||
= Copedelphys innominata
Simpson 1928
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Alroy 2002 | |||||||||
recombined as Herpetotherium innominatum | ||||||||||
Peratherium marsupium
(Troxell 1923)
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(6 measurements) | ||||||||||
= Herpetotherium marsupium
Troxell 1923
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Alroy 2002 | |||||||||
unclassified
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Scenopagus edenensis
(McGrew et al. 1959)
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see common names |
Geography
Country: | United States | State/province: | Utah | County: | Uintah |
Coordinates: | 40.2° North, 109.9° West (view map) | ||||
Paleocoordinates: | 44.2° North, 96.4° West | ||||
Basis of coordinate: | based on political unit | ||||
Geographic resolution: | small collection |
Time
Period: | Paleogene | Epoch: | Eocene |
10 m.y. bin: | Cenozoic 2 | ||
*Period: | Tertiary | ||
Key time interval: | Bridgerian | ||
Age range of interval: | 50.50000 - 46.20000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Green River | Member: | Douglas Creek |
Local section: | PwdrW | Local bed: | 3 |
Local order: | bottom to top | ||
Stratigraphic resolution: | group of beds |
Lithology and environment
Primary lithology: | sandstone |
Lithology description: "a uniformly muddy, fine-grained sublitharenite" (Gunnell and Bartels 1999) | |
Environment: | channel lag |
Geology comments: the "association of hard, dense, bony elements in a sandstone suggests a lag deposit within a channel or splay... [perhaps] a small meandering stream channel, a lake-margin (deltaic) distributary channel, or the basal portion of a crevasse splay" (Gunnell and Bartels 1999) |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils,mesofossils |
Articulated whole bodies: | none |
Associated major elements: | none |
Disassociated major elements: | some |
Disassociated minor elements: | many |
Spatial resolution: | allochthonous |
Collection methods and comments
Collection size: | 1700 specimens |
Reason for describing collection: | general faunal/floral analysis |
Taxonomic list comments:sec 8 T 7S R 25E: Van Houten 1945 same as the "Green River" fauna of Burke 1935 and Kay 1957 according to Remy 1992 there is an Ar-Ar date of 47.2 Ma on the "curly tuff... between the S1 marker unit and the Magohany oil shale bed" (S1 unit is lower); because the fauna is from "82 m below" the shale and the date is interpreted by Remy as Uintan, I assume it is too young for use as a calibration point "Class 1" reliability K-Ar date of 44.8 (= 46.0) +/- 0.9 Ma (Mauger 1977) for the Wavy Tuff is definitely too young for use as the tuff is 20 ft above the Mahogany Oil Shale; Wavy Tuff redated at 42.3 +/- 2.0 (FT on zircon) by Bryant et al. 1989 original list repeated almost without modification by Gunnell and Bartels 1999 Black and Sutton list the following: Thisbemys corrugatus "Leptotomus bridgerensis" falls in the Parachute Creek Mbr. sensu Roehloer 1992 early Bridgerian the record of Apatemys hendryi reported by Robinson 1966b is omitted without comment by K & S |
Metadata
Also known as: | Powder Springs | ||
Database number: | 16396 | ||
Authorizer: | J. Alroy, P. Holroyd | Enterer: | J. Alroy, P. Holroyd |
Modifier: | J. Alroy | Research group: | vertebrate |
Created: | 1993-02-18 00:00:00 | Last modified: | 2008-10-29 12:43:25 |
Access level: | the public | Released: | 1993-02-18 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
2182. | L. Krishtalka and R. K. Stucky. 1984. Middle Eocene marsupials (Mammalia) from northeastern Utah and the mammalian fauna from Powder Wash. Annals of Carnegie Museum 53(2):31-46 [J. Alroy/J. Alroy/M. Uhen] |
Secondary references:
6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
1619 | 5% 40780 | C. L. Gazin. 1968. A study of the Eocene condylarthran mammal Hyopsodus. Smithsonian Miscellaneous Collections 153(4):1-90 [J. Alroy/J. Alroy/J. Head] |
1735 | G. F. Gunnell. 1998. Creotonda. In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary Mammals of North America, Volume 1: Terrestrial Carnivores, Ungulates, and Ungulate like Mammals [J. Alroy/J. Alroy/M. Uhen] | |
1741 | G. F. Gunnell and W. S. Bartels. 1999. Middle Eocene vertebrates from the Uinta Basin, Utah, and their relationship with faunas from the southern Green River Basin, Wyoming. Utah Geological Survey Miscellaneous Publication 99-1:429-442 [J. Alroy/J. Alroy/J. Alroy] | |
2106 | W. W. Korth. 1985. The Rodents Pseudotomus and Quadratomus and the Content of the Tribe Manitshini (Paramyinae, Ischyromyidae). Journal of Vertebrate Paleontology 5(2):139-152 [J. Alroy/J. Alroy/J. Ju] |