Washakie A: Bridgerian, Wyoming
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Baenidae
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Baena arenosa
Leidy 1870
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Hay 1908 | 1 specimen | ||||||||
AMNH 1115 (Hay, 1908, figs. 49-5 1), shell, portion of pelvis. | ||||||||||
Mammalia
- Dinocerata
- Uintatheriidae
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Uintatherium anceps
(Marsh 1871)
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McCarroll et al. 1996 | |||||||||
listed as "Dinoceras cuneum" and "Tinoceras affine" by Turnbull 1972 | ||||||||||
Mammalia
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Stylinodon mirus
Marsh 1874
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McCarroll et al. 1996 | |||||||||
Stylinodon inexplicatus n. sp.
Schoch and Lucas 1981
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McCarroll et al. 1996 | |||||||||
synonym of Stylinodon mirus | ||||||||||
and only specimen according to Schoch and Lucas 1981b | ||||||||||
Mammalia
- Apatemyidae
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cf. Apatemys bellus
Marsh 1872
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McCarroll et al. 1996 | |||||||||
Mammalia
- Pantolestidae
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Pantolestes cf. elegans
(Marsh 1872)
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McCarroll et al. 1996 | |||||||||
= Pantolestidae indet.
Cope 1884
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Alroy 2002 | |||||||||
Pantolestes cf. natans
Matthew 1909
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McCarroll et al. 1996 | |||||||||
Pantolestes cf. longicaudus
(Cope 1872)
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McCarroll et al. 1996 | |||||||||
Mammalia
- Acreodi
- Mesonychidae
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Harpagolestes sp.
Wortman 1901
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McCarroll et al. 1996 | |||||||||
probably "Synoplotherium sp." of Turnbull 1972 | ||||||||||
Mammalia
- Perissodactyla
- Brontotheriidae
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Telmatherium sp.
Marsh 1872
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McCarroll et al. 1996 | |||||||||
based on discussion of Mader 1989, I believe this includes the type of "Manteoceras washakiensis" Osborn 1908 from "Base of Haystack Mountain... summit of the Lower Washakie (A)" (said by Roehler 1973 to be upper Washakie A | ||||||||||
Mesatirhinus sp.
Osborn 1908
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McCarroll et al. 1996 | |||||||||
listed as "M. megarhinus" by Turnbull | ||||||||||
Palaeosyops sp.
Leidy 1870
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McCarroll et al. 1996 | |||||||||
this is the AMNH "P. copei" specimen of Osborn 1929 from Washakie A; may include "Titanotheriidae indet." of Turnbull 1972 | ||||||||||
Mammalia
- Perissodactyla
- Equidae
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Orohippus sp.
Marsh 1872
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McCarroll et al. 1996 | |||||||||
Mammalia
- Perissodactyla
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Isectolophus latidens
(Osborn et al. 1878)
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McCarroll et al. 1996 | |||||||||
(3 measurements) | ||||||||||
Mammalia
- Perissodactyla
- Hyrachyidae
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Hyrachyus eximius
Leidy 1871
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McCarroll et al. 1996 | |||||||||
Hyrachyus modestus
(Leidy 1870)
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McCarroll et al. 1996 | |||||||||
Mammalia
- Homacodontidae
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Homacodon vagans
Marsh 1872
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McCarroll et al. 1996 | |||||||||
Mammalia
- Creodonta
- Oxyaenidae
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Patriofelis ferox
(Marsh 1872)
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Denison 1938 | |||||||||
Mammalia
- Creodonta
- Hyaenodontidae
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Sinopa sp.
Leidy 1871
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McCarroll et al. 1996 | |||||||||
listed as "S. rapax" by Turnbull | ||||||||||
Mammalia
- Viverravidae
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Viverravus sp.
Marsh 1872
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McCarroll et al. 1996 | |||||||||
Mammalia
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Miacis washakius
(Wortman 1901)
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McCarroll et al. 1996 | |||||||||
original and current combination Neovulpavus washakius | ||||||||||
Miacis medius
Matthew 1909
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McCarroll et al. 1996 | |||||||||
recombined as Lycarion medius | ||||||||||
Miacis cf. sylvestris
(Marsh 1872)
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McCarroll et al. 1996 | |||||||||
original and current combination Harpalodon sylvestris | ||||||||||
Mammalia
- Primates
- Omomyidae
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Omomys carteri
Leidy 1869
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McCarroll et al. 1996 | |||||||||
Hemiacodon gracilis
Marsh 1872
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McCarroll et al. 1996 | |||||||||
Mammalia
- Primates
- Microsyopidae
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Microsyops annectens
(Marsh 1872)
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McCarroll et al. 1996 | |||||||||
Mammalia
- Primates
- Notharctidae
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Notharctus robustior
Leidy 1872
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McCarroll et al. 1996 | |||||||||
Mammalia
- Rodentia
- Sciuravidae
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Sciuravus sp.
Marsh 1871
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McCarroll et al. 1996 | |||||||||
Sciuravus nitidus
Marsh 1871
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McCarroll et al. 1996 | |||||||||
Mammalia
- Rodentia
- Ischyromyidae
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Thisbemys sp.
Wood 1959
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McCarroll et al. 1996 | |||||||||
Leptotomus bridgerensis
Wood 1962
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McCarroll et al. 1996 | |||||||||
= Leptotomus parvus
Wood 1959
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Alroy 2002 | |||||||||
Paramys sp.
Leidy 1871
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McCarroll et al. 1996 | |||||||||
listed as "P. delicatus" by Turnbull | ||||||||||
Mammalia
- Rodentia
- Muridae
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Mysops parvus
(Marsh 1872)
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McCarroll et al. 1996 | |||||||||
Mammalia
- Condylarthra
- Hyopsodontidae
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Hyopsodus paulus
Leidy 1870
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McCarroll et al. 1996 | |||||||||
Mammalia
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Peratherium knighti
McGrew et al. 1959
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McCarroll et al. 1996 | |||||||||
= Herpetotherium cf. knighti
McGrew et al. 1959
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Alroy 2002 | |||||||||
see common names |
Geography
Country: | United States | State/province: | Wyoming | County: | Sweetwater |
Coordinates: | 41.7° North, 109.0° West (view map) | ||||
Paleocoordinates: | 45.6° North, 95.1° West | ||||
Basis of coordinate: | based on political unit |
Time
Period: | Paleogene | Epoch: | Eocene |
10 m.y. bin: | Cenozoic 2 | ||
*Period: | Tertiary | ||
Key time interval: | Bridgerian | Mammal zone: | Br3 |
Age range of interval: | 50.50000 - 46.20000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Washakie | ||||
Local order: | bottom to top | ||||
Stratigraphy comments: McCarroll et al. 1996 correlate older collections listed as "Washakie A" with both the Kinney Rim and lowest unit of the Adobe Town Member. Both members are considered late Bridgerian (Br3) in age. |
Lithology and environment
Primary lithology: | not reported |
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection excludes: | some genera |
Reason for describing collection: | general faunal/floral analysis |
Taxonomic list comments:this unit spans beds 569 to 620 of Roehler; most of this interval is reversed, but there are two normal excursions of unclear significance; it is best treated as a reversed chron immediately preceding the normal chron seen in the overlying unit Turnbull 1972 distinguished "upper" and "lower" Washakie A faunas but the upper fauna is duplicated almost entirely by the lower fauna and the two are merged by McCarroll et al.; list is still incomplete and certain older i.d.s therefore may be valid |
Metadata
Also known as: | LaClede Meadows | ||
Database number: | 16647 | ||
Authorizer: | J. Alroy, R. Benson | Enterer: | J. Alroy, R. Benson |
Modifier: | P. Holroyd | Research group: | vertebrate |
Created: | 1994-07-26 00:00:00 | Last modified: | 2024-03-27 23:33:09 |
Access level: | the public | Released: | 1994-07-26 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
78605. | S. Tomiya, S. P. Zack, M. Spaulding and J. J. Flynn. 2021. Carnivorous mammals from the middle Eocene Washakie Formation, Wyoming, USA, and their diversity trajectory in a post-warming world. Journal of Paleontology Memoir 95(82):1-115 [P. Holroyd/P. Holroyd] |
Secondary references:
6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
1361 | 5% 37020 | R. H. Denison. 1938. The broad-skulled Pseudocreodi. Annals of the New York Academy of Sciences 37:163-256 [J. Alroy/J. Alroy/W. Clyde] |
704 | E. S. Gaffney. 1972. The systematics of the North American family Baenidae (Reptilia, Cryptodira). Bulletin of the American Museum of Natural History 147(5):245-312 [J. Alroy/M. Sommers/R. Benson] | |
14442 | ETE | O. P. Hay. 1908. The fossil turtles of North America. Carnegie Institution of Washington Publication 75:1-568 [M. Carrano/M. Carrano/M. Carrano] |
2495 | S. M. McCarroll, J. J. Flynn, and W. D. Turnbull. 1996. Biostratigraphy and magnetostratigraphy of the Bridgerian-Uintan Washakie Formation, Washakie Basin, Wyoming. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 25-39 [J. Alroy/J. Alroy/J. Marcot] |