Hemicyon Quarry: Barstovian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
- Perissodactyla
- Equidae
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Megahippus mckennai
Tedford and Alf 1962
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Gonzalez and Lofgren 2013 | |||||||||
FAM 21085 | ||||||||||
Mammalia
- Perissodactyla
- Rhinocerotidae
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Aphelops megalodus
(Cope 1873)
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Prothero 2005 | |||||||||
Mammalia
- Antilocapridae
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Meryceros joraki n. sp.
Frick 1937
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recombined as Merycodus joraki | ||||||||||
Mammalia
- Tayassuidae
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Dyseohyus fricki
Stock 1937
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Woodburne 1969 | |||||||||
Mammalia
- Merycoidodontidae
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Ustatochoerus medius
(Leidy 1858)
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Schultz and Falkenbach 1941 | |||||||||
includes type of "Ustatochoerus medius mohavensis": Hemicyon Stratum | ||||||||||
= Mediochoerus mohavensis
Schultz and Falkenbach 1941
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Alroy 2002 | |||||||||
original and current combination Ustatochoerus medius mohavensis | ||||||||||
Mammalia
- Carnivora
- Amphicyonidae
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Ischyrocyon sp.
Matthew and Gidley 1904
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Hunt 1998 | |||||||||
Mammalia
- Carnivora
- Ursidae
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Plithocyon barstowensis
(Frick 1926)
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Hunt 1998 | |||||||||
Mammalia
- Carnivora
- Canidae
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Aelurodon asthenostylus
Wang et al. 1999
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Wang et al. 1999 | |||||||||
Hemicyon Stratum | ||||||||||
Microtomarctus conferta
(Matthew 1918)
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Wang et al. 1999 | |||||||||
Hemicyon Stratum | ||||||||||
Paratomarctus temerarius
(Leidy 1858)
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Wang et al. 1999 | |||||||||
also Hemicyon Stratum | ||||||||||
Leptocyon leidyi
Tedford et al. 2009
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Tedford et al. 2009 | |||||||||
"Hemicyon stratum" | ||||||||||
Mammalia
- Proboscidea
- Gomphotheriidae
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Gomphotherium sp.
Burmeister 1837
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Kelly and Lander 1988 | |||||||||
see common names |
Geography
Country: | United States | State/province: | California | County: | San Bernardino |
Coordinates: | 35.1° North, 117.1° West (view map) | ||||
Paleocoordinates: | 35.8° North, 114.1° West | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | small collection |
Time
Period: | Neogene | Epoch: | Miocene |
10 m.y. bin: | Cenozoic 5 | ||
*Period: | Tertiary | ||
Key time interval: | Barstovian | ||
Age range of interval: | 16.30000 - 12.50000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Lithology and environment
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection excludes: | some genera |
Reason for describing collection: | taxonomic analysis |
Museum repositories: | AMNH |
Collection method comments: AMNH collections only; see for L. A. Mus. no. V491 for later Tedford and Shultz collection | |
Taxonomic list comments:Hemicyon Stratum is about "3-30" m below the Hemicyon Tuff and main exposure is in Hemicyon Basin: Woodburne et al. 1990; although not discussed, it seems probable that Hemicyon Quarry is in the Hemicyon Stratum in Hemicyon Basin, and therefore just below the Hemicyon Tuff, which is dated at 14.0 +/- 0.1 Ma by MacFadden et al. 1990 (Ar-Ar) generalized "Barstow Fauna" records of Woodburne et al. 1990, unless otherwise stated: Megahippus mckennai Merychippus sumani - type is from "Barstow": Merriam 1915d Pliosaccomys sp. "Miomastodon sp." Cynarctus galushai Wang et al. 1999: provenance of specimen unknown, but "preservation suggests Hemicyon Quarry" "Tomarctus" Jakway and Clement 1967: SW 1/4 sec 14 T11N R2W, San Bernardino County, upper Barstow Formation: this is in or near Hemicyon Basin "Tomarctus" Jakway and Clement 1967: UCR V-5201, "Barstow fossil beds" (no further data) Paratomarctus temerarius Wang et al. 1999: "First Division" Aelurodon asthenostylus Wang et al. 1999: "First Division"; "Prospect near Chert Ridge"; "Horizon below Split Ridge" Miolabis cf. fissidens Protolabis cf. barstowensis "Protolabis" cf. inaequidens Aepycamelus alexandrae - type, from "Fossiliferous Tuff member": see Davidson 1923 |
Metadata
Database number: | 19364 | ||
Authorizer: | J. Alroy, J. Marcot | Enterer: | J. Alroy, J. Marcot |
Modifier: | J. Alroy | Research group: | vertebrate |
Created: | 2000-05-19 00:00:00 | Last modified: | 2007-08-30 20:31:04 |
Access level: | the public | Released: | 2000-05-19 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
6222. | C. Frick. 1937. Horned ruminants of North America. Bulletin of the American Museum of Natural History 69:1-669 [J. Alroy/J. Alroy/M. Uhen] |
Secondary references:
6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
63541 | B. Gonzalez and D. L. Lofgren. 2013. Review of Megahippus and Hypohippus from the Middle Miocene Barstow Formation of California. In R. E. Reynolds (ed.), Raising Questions in the Central Mojave Desert 78-89 [J. Marcot/J. Marcot] | |
1976 | R. M. Hunt, Jr. 1998. Ursidae. In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary Mammals of North America 1:174-195 [J. Alroy/J. Alroy/M. Uhen] | |
1977 | R. M. Hunt, Jr. 1998. Amphicyonidae. 196-227 [J. Alroy/J. Alroy/J. Alroy] | |
2070 | T. S. Kelly and E. B. Lander. 1988. Biostratigraphy and Correlation of Hemingfordian and Barstovian Land Mammal Assemblages, Caliente Formation, Cuyama Valley Area, California. In W. J. M. Bazeley (ed.), Tertiary Tectonics and Sedimentation in the Cuyama Basin, San Luis Obispo, Santa Barbara, and Ventura Counties, California 1-19 [J. Alroy/J. Alroy/J. Marcot] | |
51726 | D. R. Prothero. 2005. The Evolution of North American Rhinoceroses. 1-218 [J. Marcot/J. Marcot] | |
3063 | C. B. Schultz and C. H. Falkenbach. 1941. Ticholeptinae, a new subfamily of oreodonts. Bulletin of the American Museum of Natural History 79(1):1-105 [J. Alroy/J. Alroy/J. Marcot] | |
52058 | R. H. Tedford, X. Wang, and B. E. Taylor. 2009. Phylogenetic Systematics of the North American Fossil Caninae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 325:1-218 [J. Marcot/J. Marcot/G. Lloyd] | |
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] | |
3752 | ETE | M. O. Woodburne. 1969. Systematics, biogeography, and evolution of Cynorca and Dyseohyus (Tayassuidae). Bulletin of the American Museum of Natural History 141(2):273-355 [J. Alroy/J. Alroy/M. Carrano] |
3764 | M. O. Woodburne, R. H. Tedford, and C. C. Swisher, III. 1990. Lithostratigraphy, biostratigraphy, and geochronology of the Barstow Formation, Mojave Desert, southern California. Geological Society America Bulletin 102(4):459-477 [J. Alroy/J. Alroy/J. Alroy] |