Thompson Creek: Chadronian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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informal Novacek leptictid acutidens
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Novacek 2000 | |||||||||
pers. commun. 16.2.00 | ||||||||||
Mammalia
- Perissodactyla
- Tapiridae
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Colodon sp.
Marsh 1890
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= ? Colodon cingulatus
Douglass 1902
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Radinsky 1963 | |||||||||
Mammalia
- Perissodactyla
- Brontotheriidae
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Brontotheriidae indet.
(Marsh 1873)
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"Titanotherium" | ||||||||||
Mammalia
- Perissodactyla
- Equidae
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Mesohippus latidens n. sp.
Douglass 1903
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of Douglass 1903 "Mesohippus sp." | ||||||||||
Mammalia
- Protoceratidae
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Trigenicus socialis n. sp.
Douglass 1903
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= Trigenicus profectus
Matthew 1903
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Douglass 1903 | |||||||||
Mammalia
- Agriochoeridae
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Agriochoerus minimus n. sp.
Douglass 1902
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recombined as Protoreodon minimus | ||||||||||
Mammalia
- Merycoidodontidae
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? Limnenetes anceps n. sp.
Douglass 1902
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recombined as Oreonetes anceps | ||||||||||
Limnenetes platyceps n. sp.
Douglass 1902
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Mammalia
- Carnivora
- Canidae
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Hesperocyon gregarius
(Cope 1873)
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Wang 1994 | |||||||||
from "Thomson's Creek" and listed among Pipestone localities from Jefferson Co. | ||||||||||
Mammalia
- Carnivora
- Amphicyonidae
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Brachyrhynchocyon sp.
Scott and Jepsen 1936
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Hunt 1998 | |||||||||
"Thompson Creek" | ||||||||||
Mammalia
- Rodentia
- Cylindrodontidae
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Cylindrodon fontis
Douglass 1902
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= Cylindrodon sp.
Douglass 1902
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Wood 1937 | |||||||||
see discussion of this species by Emry and Korth 1996a DUPLICATE REF 3725 or 3745 | ||||||||||
Mammalia
- Rodentia
- Ischyromyidae
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Ischyromys pliacus
Troxell 1922
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= Ischyromys sp.
Leidy 1856
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Galbreath 1953 | |||||||||
mentioned by Wood 1937 | ||||||||||
Titanotheriomys veterior
(Matthew 1903)
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= Ischyromys veterior
Matthew 1903
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Wood 1937 | |||||||||
DUPLICATE REF 3725 or 3745 | ||||||||||
Ischyromys pliacus
Troxell 1922
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= Ischyromys typus
Leidy 1856
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Wood 1937 | |||||||||
DUPLICATE REF 3725 or 3745 | ||||||||||
Mammalia
- Rodentia
- Eutypomyidae
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Eutypomys sp.
Matthew 1905
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= Eutypomys cf. inexpectatus
Wood 1974
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Wood 1980 | |||||||||
replaces ID of Wood 1937 | ||||||||||
Mammalia
- Lagomorpha
- Leporidae
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Palaeolagus temnodon
Douglass 1902
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Wood 1940 | |||||||||
from "Chadron... Three Forks, Montana" | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Montana | County: | Gallatin |
Coordinates: | 45.7° North, 111.0° West (view map) | ||||
Paleocoordinates: | 47.5° North, 102.1° West | ||||
Basis of coordinate: | based on political unit |
Time
Period: | Paleogene | Epoch: | Eocene |
Stage: | Priabonian | 10 m.y. bin: | Cenozoic 3 |
*Period: | Tertiary | ||
Key time interval: | Chadronian | ||
Age range of interval: | 37.00000 - 33.90000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Lithology and environment
Primary lithology: | poorly lithified claystone |
Lithology description: In these beds are...cracking clays...also light colored material ...containing lime. There are layers of limestone and strata of hard sandstone. | |
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection excludes: | species names |
Collection methods: | field collection |
Reason for describing collection: | taxonomic analysis |
Metadata
Database number: | 17028 | ||
Authorizer: | J. Alroy | Enterer: | J. Alroy |
Modifier: | J. Wertheim | Research group: | vertebrate |
Created: | 1993-02-18 00:00:00 | Last modified: | 2002-07-26 14:00:38 |
Access level: | the public | Released: | 1993-02-18 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
1381. | 5% 51860 | E. Douglass. 1902. Fossil Mammalia of the White River beds of Montana. Transactions of the American Philosophical Society 20:237-279 [J. Alroy/J. Alroy/W. Clyde] |
Secondary references:
6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
1382 | E. Douglass. 1903. New vertebrates from the Montana Tertiary. Annals of Carnegie Museum 2(5):145-199 [J. Alroy/J. Alroy/J. Alroy] | |
1570 | E. C. Galbreath. 1953. A contribution to the Tertiary geology and paleontology of northeastern Colorado. University of Kansas Paleontological Contributions Vertebrata 4:1-120 [J. Alroy/J. Alroy/J. Marcot] | |
1977 | R. M. Hunt, Jr. 1998. Amphicyonidae. 196-227 [J. Alroy/J. Alroy/J. Alroy] | |
6324 | M. J. Novacek. 2000. Personal communication regarding leptictid identifications. [J. Alroy/J. Alroy/J. Alroy] | |
2818 | L. B. Radinsky. 1963. Origin and Early Evolution of North American Tapiroidea. Peabody Museum of Natural History Bulletin 17:1-118 [J. Alroy/J. Alroy/J. Marcot] | |
6226 | X. Wang. 1994. Phylogenetic systematics of the Hesperocyoninae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 221:1-207 [J. Alroy/J. Alroy/J. Alroy] | |
3725 | A. E. Wood. 1937. The Mammalian Fauna of the White River Oligocene: Part II. Rodentia. Transactions of the American Philosophical Society 28(2):155-269 [J. Alroy/J. Alroy/J. Marcot] | |
3727 | A. E. Wood. 1940. The Mammalian Fauna of the White River Oligocene: Part III. Lagomorpha. Transactions of the American Philosophical Society 28(3):271-362 [J. Alroy/J. Alroy/J. Ju] | |
3737 | A. E. Wood. 1980. The Oligocene Rodents of North America. Transactions of the American Philosophical Society 70(5):1-68 [J. Alroy/J. Alroy/J. Ju] |