State Line Quarry: Bridgerian, Wyoming
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Testudines
- Geoemydidae
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Bridgeremys pusilla
(Hay 1908)
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Hutchison 2006 | 1 specimen | ||||||||
Reptilia
- Testudines
- Kinosternoidea
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Xenochelys bridgerensis
Hutchison 1991
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Hutchison 1991 | |||||||||
UCMP loc V74135=State Line Quarry | ||||||||||
Mammalia
- Apatemyidae
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Apatemys bellus
Marsh 1872
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Mammalia
- Insectivora
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Insectivora indet.
Bowdich 1821
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three forms | ||||||||||
Mammalia
- Condylarthra
- Hyopsodontidae
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Hyopsodus lepidus
Matthew 1909
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Mammalia
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Miacis parvivorus
Cope 1872
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Mammalia
- Carnivora
- Miacidae
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Miacidae indet.
Cope 1880
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Mammalia
- Perissodactyla
- Equidae
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Orohippus sp.
Marsh 1872
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Mammalia
- Perissodactyla
- Hyrachyidae
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Hyrachyus modestus
(Leidy 1870)
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Mammalia
- Nyctitheriidae
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Scenopagus priscus
(Marsh 1872)
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original and current combination Nyctitherium priscus | ||||||||||
Talpavus cf. nitidus
Marsh 1872
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recombined as Nyctitherium nitidum | ||||||||||
Nyctitherium serotinum
(Marsh 1872)
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Mammalia
- Rodentia
- Paramyidae
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Paramyidae indet.
Miller and Gidley 1918
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two forms, close to Leptotomus | ||||||||||
Mammalia
- Rodentia
- Muridae
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Mysops parvus
(Marsh 1872)
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Mammalia
- Rodentia
- Sciuravidae
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Sciuravidae indet.
Miller and Gidley 1918
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? Tillomys sp.
Marsh 1872
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Pauromys sp.
Troxell 1923
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Mammalia
- Rodentia
- Ischyromyidae
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Microparamys minutus
(Wilson 1937)
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(1 measurement) | ||||||||||
Leptotomus bridgerensis
Wood 1962
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= Leptotomus parvus
Wood 1959
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Eaton 1982 | |||||||||
Thisbemys corrugatus
Wood 1959
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(1 measurement) | ||||||||||
? Paramys aff. excavatus
Loomis 1907
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Mammalia
- Primates
- Notharctidae
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Notharctus sp.
Leidy 1870
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= Notharctus cf. robustior
Leidy 1872
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Nelson 1977 | |||||||||
Mammalia
- Primates
- Omomyidae
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Omomys carteri
Leidy 1869
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Hemiacodon gracilis
Marsh 1872
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Mammalia
- Primates
- Microsyopidae
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Uintasorex parvulus
Matthew 1909
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Mammalia
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Peratherium sp.
Aymard 1850
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= Herpetotheriinae indet.
Trouessart 1879
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Alroy 2002 | |||||||||
spelled with current rank as Herpetotheriidae | ||||||||||
and an additional didelphid | ||||||||||
Mammalia
- Dinocerata
- Uintatheriidae
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? Uintatherium sp.
Leidy 1872
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see common names |
Geography
Country: | United States | State/province: | Wyoming | County: | Uinta |
Coordinates: | 41.3° North, 111.0° West (view map) | ||||
Paleocoordinates: | 45.4° North, 97.6° West | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | small collection |
Time
Period: | Paleogene | Epoch: | Eocene |
10 m.y. bin: | Cenozoic 2 | ||
*Period: | Early/Lower Tertiary | *Epoch: | Middle Eocene | *Local age/stage: | Bridgerian |
Key time interval: | Bridgerian | ||
Age range of interval: | 50.50000 - 46.20000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Fowkes | Member: | Bulldog Hollow | ||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: all fossils are from a single quarry within a member |
Lithology and environment
Primary lithology: | tuffaceous mudstone |
Secondary lithology: | sandstone |
Lithology description: "tuffaceous mudstone, sandstone, and siliceous limestone" (Nelson 1973) or "tuffaceous mudstone and sandstone" (Nelson 1974, 1977) | |
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils,mesofossils |
Disassociated minor elements: | many |
Collection methods and comments
Collection methods: | selective quarrying,field collection |
Reason for describing collection: | taxonomic analysis |
Taxonomic list comments:close to the Utah state line and well west of the Green River Basin date of 47.9 (49.1 corrected) +/- 1.9 Ma (K-Ar on biotite) on a sample immediately above the quarry; date of 47.7 Ma reported earlier is from a site 48 km to the north |
Metadata
Also known as: | Thomas Canyon | ||
Database number: | 16418 | ||
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: | 2002-09-28 16:50:18 |
Access level: | the public | Released: | 1993-02-18 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
2640. | M. E. Nelson. 1973. Age and stratigraphic relationships of the Fowkes Formation, Eocene, of southwestern Wyoming and northeastern Utah. Contributions to Geology, University of Wyoming 12(1):27-31 [J. Alroy/J. Alroy/J. Alroy] |
Secondary references:
6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
1404 | J. G. Eaton. 1982. Paleontology and correlation of Eocene volcanic rocks in the Carter Mountain area, Park County, southeastern Absaroka Range, Wyoming. Contributions to Geology, University of Wyoming 21(2):153-194 [J. Alroy/J. Alroy/M. Uhen] | |
691 | J. H. Hutchison. 1991. Early Kinosterninae (Reptilia: Testudines) and their phylogenetic significance. Journal of Vertebrate Paleontology 11(2):145-167 [J. Alroy/J. Alroy/J. Alroy] | |
58299 | J. H. Hutchison. 2006. Bridgeremys (Geoemydidae,Testudines), a new genus from the middle Eocene of North America. In I. G. Danilov and J. F. Parham (eds.), Fossil Turtle Research 1:63-83 [P. Holroyd/P. Holroyd/M. Uhen] | |
2643 | 5% 29880 | M. E. Nelson. 1977. Middle Eocene primates (Mammalia) from southwestern Wyoming. Southwestern Naturalist 22(4):487-493 [J. Alroy/J. Alroy/J. Head] |