Lone Tree (Bridger D): Bridgerian, Wyoming
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Leptictidae
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Hypictops syntaphus n. sp.
Gazin 1949
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= Leptictidae indet.
Gill 1872
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Alroy 2002 | |||||||||
| from just above Lone Tree White Layer, Bridger D2, 3 mi N of Lone Tree; see Gazin 1949 | ||||||||||
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Mammalia
- Perissodactyla
- Brontotheriidae
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Palaeosyops robustus
(Marsh 1872)
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Osborn 1929 | |||||||||
| Bridger D4; also Gazin 1949: 3 mi N of Lone Tree; associated with type of "Hypictops syntaphus"; includes type of "P. copei" of Osborn 1908 from Bridger D3, and referred specimen from D1, both at Lone Tree | ||||||||||
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Limnohyops laticeps
(Leidy 1872)
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= Palaeosyops laticeps
Leidy 1872
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Osborn 1929 | |||||||||
| synonym of Palaeosyops robustus | ||||||||||
| Bridger D2 | ||||||||||
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Mammalia
- Perissodactyla
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Isectolophus latidens
(Osborn et al. 1878)
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Holbrook et al. 2004 | |||||||||
| AMNH skulls from "Bridger 'D4', Henry's Fork, Lone Tree" | ||||||||||
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Helaletes intermedius
(Osborn et al. 1878)
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= Desmatotherium intermedius
Osborn et al. 1878
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Schoch 1984 | |||||||||
| recombined as Helaletes intermedius | ||||||||||
| referred specimen of "Ephyrachyus implicatus" of Wood 1934, from Bridger D1 | ||||||||||
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Mammalia
- Metacheiromyidae
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Metacheiromys osborni n. sp.
Simpson 1931
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= Metacheiromys dasypus
Osborn 1904
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Alroy 2002 | |||||||||
| from Bridger D2: see Simpson 1931, Schoch 1984a | ||||||||||
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Reptilia
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Pristichampsus vorax
(Troxell 1925)
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Langston 1975 | |||||||||
| recombined as Boverisuchus vorax | ||||||||||
| USNM 12957 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Wyoming | County: | Uinta |
| Coordinates: | 41.2° North, 110.5° West (view map) | ||||
| Paleocoordinates: | 45.2° North, 96.8° 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 | ||
| Age range of interval: | 50.50000 - 46.20000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
Lithology and environment
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
Metadata
| Database number: | 16279 | ||
| Authorizer: | J. Alroy, P. Mannion | Enterer: | J. Alroy, P. Mannion | Research group: | vertebrate |
| Created: | 1996-08-05 00:00:00 | Last modified: | 2002-06-03 03:27:41 |
| Access level: | the public | Released: | 1996-08-05 00:00:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 1623. | C. L. Gazin. 1976. Mammalian Faunal Zones of the Bridger Middle Eocene. Smithsonian Contributions to Paleobiology 26:1-25 [J. Alroy/J. Alroy/J. Marcot] |
Secondary references:
| 6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
| 40434 | L. T. Holbrook, S. G. Lucas, and R. J. Emry. 2004. Skulls of the Eocene perissodactyls (Mammalia) "Homogalax" and "Isectolophus". Journal of Vertebrate Paleontology 24(4):951-956 [J. Alroy/J. Alroy] | |
| 46624 | W. Langston. 1975. Ziphodont crocodiles: Pristichampsus vorax (Troxell), new combination. Fieldiana: Geology 33(16):291-314 [P. Mannion/P. Mannion/M. Carrano] | |
| 2708 | H. F. Osborn. 1929. New Eurasiatic and American proboscideans. American Museum Novitates 393:1-22 [J. Alroy/J. Alroy/M. Carrano] | |
| 3050 | R. M. Schoch. 1984. Two unusual specimens of Helaletes in the Yale Peabody Museum collections, and some comments on the ancestry of the Tapiridae (Perissodactyla, Mammalia). Postilla 193:1-20 [J. Alroy/J. Alroy/J. Ju] |