Syndyoceras Quarry: Harrisonian, Nebraska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Perissodactyla
- Rhinocerotidae
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Metacaenopus egregius n. sp.
(Cook 1908)
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Patton and Taylor 1971 | |||||||||
| synonym of Diceratherium niobrarensis | ||||||||||
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Mammalia
- Protoceratidae
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Syndyoceras cooki n. sp.
Barbour 1905
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Patton and Taylor 1971 | |||||||||
| see also Frick 1937 | ||||||||||
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Mammalia
- Hypertragulidae
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Nanotragulus matthewi n. sp.
Cook 1934
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Cook 1934 | |||||||||
| synonym of Nanotragulus ordinatus | ||||||||||
| near types of L. agatensis and S. cooki in same horizon | ||||||||||
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Mammalia
- Leptomerycidae
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Leptomeryx agatensis n. sp.
Cook 1934
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Cook 1934 | |||||||||
| synonym of Leptomeryx obliquidens | ||||||||||
| Syndyoceras Hill (5 measurements) | ||||||||||
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Mammalia
- Carnivora
- Palaeogalidae
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? Palaeogale sp.
von Meyer 1846
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Cook and Macdonald 1962 | |||||||||
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Mammalia
- Carnivora
- Canidae
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Cynarctoides acridens
(Barbour and Cook 1914)
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Wang et al. 1999 | |||||||||
| "First hill south of Synyoceras Hill, 0.5 mi west of Agate, Harrison Formation" | ||||||||||
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Nothocyon minor
(Matthew 1907)
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Cook and Macdonald 1962 | |||||||||
| recombined as Phlaocyon minor | ||||||||||
| confirmed by Wang et al. 1999 | ||||||||||
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Nothocyon regulus n. sp.
Cook and Macdonald 1962
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Cook and Macdonald 1962 | |||||||||
| synonym of Desmocyon thomsoni | ||||||||||
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Nothocyon gregorii
Matthew 1907
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Cook and Macdonald 1962 | |||||||||
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= Leptocyon cf. gregorii
Matthew 1907
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Alroy 2002 | |||||||||
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Mesocyon venator n. sp.
(Cook 1909)
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| synonym of Paraenhydrocyon wallovianus | ||||||||||
| provenance is more questionable than Stevens believes according to Wang 1994 (1 measurement) | ||||||||||
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Mammalia
- Carnivora
- Amphicyonidae
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"Temnocyon" percussor n. sp.
Cook 1909
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Hunt 1972 | |||||||||
| from "1/2 mi W of Agate" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nebraska | County: | Sioux |
| Coordinates: | 42.4° North, 103.8° West (view map) | ||||
| Paleocoordinates: | 43.3° North, 98.8° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | small collection |
Time
| 10 m.y. bin: | Cenozoic 4-5 | ||
| *Period: | Tertiary | *Epoch: | Miocene |
| Key time interval: | Harrisonian | ||
| Age range of interval: | 23.10000 - 18.50000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Lithology and environment
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Collection excludes: | some genera |
| Taxonomic list comments:Harrison Fm. sensu stricto: Hunt 1985a see Patton and Taylor 1971 for precise locality data | |
Metadata
| Also known as: | Syndyoceras Hill | ||
| Database number: | 17846 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy | Research group: | vertebrate |
| Created: | 1993-09-27 00:00:00 | Last modified: | 2002-06-03 03:27:42 |
| Access level: | the public | Released: | 1993-09-27 00:00:00 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 3223. | M. S. Stevens. 1991. Osteology, Systematics, and Relationships of Earliest Miocene Mesocyon venator (Carnivora: Canidae). Journal of Vertebrate Paleontology 11(1):45-66 [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] | |
| 1268 | H. J. Cook. 1934. New artiodactyls from the Oligocene and Lower Miocene of Nebraska. American Midland Naturalist 15(2):148-165 [J. Alroy/J. Alroy/J. Alroy] | |
| 1270 | H. J. Cook and J. R. Macdonald. 1962. New Carnivora from the Miocene and Pliocene of Western Nebraska. Journal of Paleontology 36(3):560-567 [J. Alroy/J. Alroy/J. Marcot] | |
| 1966 | R. M. Hunt, Jr. 1972. Miocene amphicyonids (Mammalia, Carnivora) from the Agate Spring Quarries, Sioux County, Nebraska. American Museum Novitates 2506:1-39 [J. Alroy/J. Alroy/J. Ju] | |
| 6773 | W. W. Korth and M. E. Diamond. 2002. Review of Leptomeryx (Artiodactyla, Leptomerycidae) from the Orellan (Oligocene) of Nebraska. Annals of Carnegie Museum 71(2):107-129 [J. Alroy/J. Alroy/J. Alroy] | |
| 2739 | T. H. Patton and B. E. Taylor. 1971. The Synthetoceratinae (Mammalia, Tylopoda, Protoceratidae). Bulletin of the American Museum of Natural History 145(2):119-218 [J. Alroy/J. Alroy/B. Beatty] | |
| 3558 | X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy] |