Iron Mountain Bed: Burdigalian, Oregon
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
- Carnivora
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Pteronarctos goedertae
Barnes 1989
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Berta 1994 | 5 specimens | ||||||||
several specimens in Berta 1994 have different locality descriptions, but all are about the same place | ||||||||||
Pteronarctos piersoni n. sp.
Barnes 1990
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Barnes 1990 | 1 specimen | ||||||||
synonym of Pteronarctos goedertae | ||||||||||
Pacificotaria hadromma n. gen., n. sp.
Barnes 1992
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Barnes 1992 | 1 specimen | ||||||||
synonym of Pteronarctos goedertae | ||||||||||
Mammalia
- Carnivora
- Desmatophocidae
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Allodesminae indet.
(Kellogg 1931)
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Barnes and Hirota 1995 | |||||||||
Desmatophoca oregonensis
Condon 1906
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Barnes 1987 | 1 specimen | ||||||||
Mammalia
- Carnivora
- Odobenidae
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Proneotherium repenningi n. gen., n. sp.
Kohno et al. 1995
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Kohno et al. 1995 | 1 specimen | ||||||||
Mammalia
- Perissodactyla
- Chalicotheriidae
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Tylocephalonyx sp.
Coombs 1979
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Mammalia
- Perissodactyla
- Rhinocerotidae
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Aphelops sp.
Owen 1845
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Munthe and Coombs 1979 | |||||||||
"rhino"; Coombs' text post-dates Munthe and Coombs | ||||||||||
Mammalia
- Perissodactyla
- Desmostylidae
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Desmostylus sp.
Marsh 1888
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Mitchell and Repenning 1963 | |||||||||
= Desmostylus hesperus
Marsh 1888
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Domning 2008 | |||||||||
Mammalia
- Cetacea
- Cetotheriidae
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Cophocetus oregonensis
Packard and Kellogg 1934
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Packard and Kellogg 1934 | 1 specimen | ||||||||
see common names |
Geography
Country: | United States | State/province: | Oregon | County: | Lincoln |
Coordinates: | 44.7° North, 124.1° West (view map) | ||||
Paleocoordinates: | 44.5° North, 118.0° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
Geographic resolution: | outcrop |
Time
Period: | Neogene | Epoch: | Miocene |
Stage: | Burdigalian | 10 m.y. bin: | Cenozoic 5 |
*Period: | Late/Upper Tertiary | *Epoch: | Early/Lower Miocene |
Key time interval: | Burdigalian | ||
Age range of interval: | 20.44000 - 15.97000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Astoria | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: early Miocene uncomformably overlain by Depoe Bay Basalt, dated at 16 +/- 0.65, 15.2 +/- 0.6, and 14.5 +/- 1.0 Ma using KA; dates are from different localities and it is not clear which is most relevant; old constants used overlain by the slightly higher Cape Foulweather Basalt = Gingko Basalt, dated at 15.4 +/- 0.3 Ma (mehtod?): Prothero et al. 2001 in a reversed polarity zone interpreted as C5Cr: Prothero et al. 2001 |
Lithology and environment
Primary lithology: | concretionary,brown,gray sandstone |
Includes fossils? | Y |
Lithology description: "light-brown to dark-gray sandstone nodules": Prothero et al. 2001 | |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | surface (float) |
Reason for describing collection: | taxonomic analysis |
Taxonomic list comments:see also Munthe and Coombs 1979 |
Metadata
Also known as: | Schooner Point | ||
Database number: | 18929 | ||
Authorizer: | J. Alroy, M. Uhen | Enterer: | J. Alroy, M. Uhen |
Modifier: | M. Uhen | Research group: | vertebrate |
Created: | 1995-03-26 00:00:00 | Last modified: | 2008-08-19 10:33:25 |
Access level: | the public | Released: | 1995-03-26 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
1275. | M. C. Coombs. 1979. Tylocephalonyx, a new genus of North American dome-skulled chalicotheres (Mammalia, Perissodactyla). Bulletin of the American Museum of Natural History 164(1):1-64 [J. Alroy/J. Alroy/M. Uhen] |
Secondary references:
16774 | L. G. Barnes. 1987. An early Miocene pinniped of the genus Desmatophoca (Mammalia: Otariidae) from Washington. Contributions in Science 382:1-20 [M. Uhen/M. Uhen] | |
16775 | L. G. Barnes. 1990. A new Miocene enaliarctine pinniped of the genus Pteronarctos (Mammalia: Otariidae) from the Astoria Formation, Oregon. Contributions in Science 422:1-20 [M. Uhen/M. Uhen] | |
16769 | L. G. Barnes. 1992. A new genus and species of middle Miocene enaliarctine pinniped (Mammalia, Carnivora, Otariidae) from the Astoria Formation in Coastal Oregon. Contributions in Science 431:1-27 [M. Uhen/M. Uhen] | |
16919 | L. G. Barnes and K. Hirota. 1995. Miocene pinnipeds of the otariid subfamily Allodesminae in the North Pacific Ocean: Systematics and relationships. The Island Arc 3:329-360 [M. Uhen/M. Uhen] | |
16743 | A. Berta. 1994. New specimens of the pinnipediform Pteronarctos from the Miocene of Oregon. Smithsonian Contributions to Paleobiology 78:1-30 [M. Uhen/M. Uhen] | |
30424 | D. P. Domning. 2008. Desmostylia. In C. M. Janis, G. F. Gunnell, M. D. Uhen (eds.), Evolution of Tertiary Mammals of North America, Volume II 640-645 [M. Uhen/M. Uhen] | |
16898 | N. Kohno, L. G. Barnes, and K. Hirota. 1995. Miocene fossil pinnipeds of the genera Prototaria and Neotherium (Carnivora; Otariidae; Imagotariinae) in the North Pacific Ocean: Evolution, relationships and distribution. The Island Arc 3:285-308 [M. Uhen/M. Uhen] | |
16802 | E. D. Mitchell and C. A. Repenning. 1963. The chronologic and geolographic range of desmostylians. Contributions in Science 78:1-20 [M. Uhen/M. Uhen] | |
2635 | J. Munthe and M. C. Coombs. 1979. Miocene Dome-Skulled Chalicotheres (Mammalia, Perissodactyla) from the Western United States: A Preliminary Discussion of a Bizarre Structure. Journal of Paleontology 53(1):77-91 [J. Alroy/J. Alroy/M. Uhen] | |
12700 | E. L. Packard and R. Kellogg. 1934. A new cetothere from the Miocene Astoria Formation of Newport, Oregon. Contributions to Palaeontology Carnegie Institution of Washington 447(I):3-62 [M. Uhen/M. Uhen/M. Uhen] | |
7760 | D. R. Prothero, C. Z. Bitboul, G. W. Moore and E. J. Moore. 2001. Magnetic stratigraphy of the lower and middle Miocene Astoria Formation, Lincoln County, Oregon. Magnetic Stratigraphy of the Pacific Coast Cenozoic (D. R. Prothero, ed.) 272-283 [J. Alroy/J. Alroy/J. Alroy] |