San Juan-Rak Camel Quarries: Hemphillian, New Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Mammalia
- Carnivora
- Mustelidae
|
||||||||||
|
Plesiogulo sp.
Zdansky 1934
|
||||||||||
|
= Plesiogulo marshalli
Martin 1928
|
Harrison 1981 | |||||||||
| SJQ | ||||||||||
|
Pliotaxidea garberi
Wagner 1976
|
||||||||||
|
Mammalia
- Carnivora
- Procyonidae
|
||||||||||
|
Bassariscus sp.
Coues 1887
|
||||||||||
|
= Procyonidae indet.
Gray 1825
|
Alroy 2002 | |||||||||
| RCQ, SJQ; compared to Wikieup form | ||||||||||
|
Mammalia
- Carnivora
- Canidae
|
||||||||||
|
Canis davisi
Merriam 1911
|
||||||||||
|
= Eucyon davisi
Merriam 1911
|
Alroy 2002 | |||||||||
|
Mammalia
- Perissodactyla
- Equidae
|
||||||||||
|
Astrohippus ansae
(Matthew and Stirton 1930)
|
||||||||||
|
Dinohippus interpolatus
(Cope 1893)
|
||||||||||
|
Mammalia
- Perissodactyla
- Rhinocerotidae
|
||||||||||
|
Teleoceras sp.
Hatcher 1894
|
MacFadden et al. 1979 | |||||||||
|
Aphelops mutilus
Matthew 1924
|
MacFadden et al. 1979 | |||||||||
|
Mammalia
- Camelidae
|
||||||||||
|
Hemiauchenia sp.
Gervais and Ameghino 1880
|
||||||||||
|
Megatylopus matthewi
Webb 1965
|
||||||||||
|
Mammalia
- Antilocapridae
|
||||||||||
|
Antilocaprinae indet.
Gray 1866
|
Tedford and Barghoorn 1993 | |||||||||
| presumably includes "cf. Plioceros sp."; this may be the P. sp. material of Frick 1937 from "W. Rio Grande, above San Juan | ||||||||||
|
Mammalia
- Lagomorpha
- Leporidae
|
||||||||||
|
Hypolagus vetus
(Kellogg 1910)
|
||||||||||
|
= Hypolagus gidleyi
White 1988
|
White 1988 | |||||||||
|
Mammalia
- Rodentia
|
||||||||||
|
Rodentia indet.
Bowdich 1821
|
||||||||||
|
Mammalia
- Rodentia
- Mylagaulidae
|
||||||||||
|
Mylagaulus sp.
Cope 1878
|
||||||||||
|
= Mylagaulidae indet.
Cope 1881
|
Alroy 2002 | |||||||||
| RCQ | ||||||||||
|
Mammalia
- Rodentia
- Castoridae
|
||||||||||
|
"Dipoides" williamsi
Stirton 1936
|
||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | New Mexico | County: | Rio Arriba |
| Coordinates: | 36.5° North, 107.0° West (view map) | ||||
| Paleocoordinates: | 36.9° North, 105.3° West | ||||
| Basis of coordinate: | based on political unit |
Time
| Period: | Neogene | ||
| 10 m.y. bin: | Cenozoic 6 | ||
| *Period: | Tertiary | *Epoch: | Miocene |
| Key time interval: | Hemphillian | ||
| Age range of interval: | 9.40000 - 4.70000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Chamita | Member: | upper tuffaceous zone |
| Local section: | Espan | Local bed: | 8 |
| Local order: | bottom to top |
Lithology and environment
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Taxonomic list comments:same level as Osbornoceros Quarry upper tuffaceous zone dated by McIntosh and Quade 1995 using SCLF Ar/Ar on sanidine at between 6.93 +/- 0.05 Ma (base) and 6.78 +/- 0.03 Ma (top); this replaces older FT date on zircon of 5.6 +/- 0.9 Ma for an ash 35 m above the quarries; paleomag correlation is said by MacFadden to be with lowest reversed in the Gilbert, but this matches the banding pattern and new dates poorly, and both McIntosh and Quade 1995 and Lindsay et al. 1984 correlate it with upper "VI" reversed, i.e., 3Ar of Cande and Kent 1992 dates of Dethier et al. 1986 for the Chamita Fm. are for the base of the Fm. Gomphotherium sp. and Hemiauchenia cf. vera from "6.93" Ma level of Latorre et al. 1997 may pertain to these quarries Pliometanastes sp. Hirschfeld and Webb 1968: "Santa Clara Canyon" stratigraphically between San Juan and Leyden quarries (relative order not indicated) "Vulpes stenognathus" is listed by MacFadden et al. 1979 but not discussed; this could be a typographical error "Osbornoceros osborni" appears to be from the Osbornoceros Quarry of Tedford and Barghoorn 1993 (see); however, Frick 1937 lists this species from "W. Rio Grande, above San Juan" "Ilingoceros alexandrae" is apparently the same record said by Tedford and Barghoorn 1993 to be from an indeterminate level in the Fm. |
Metadata
| Database number: | 19533 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | J. Alroy | Research group: | vertebrate |
| Created: | 1993-09-27 00:00:00 | Last modified: | 2009-12-20 13:23:02 |
| Access level: | the public | Released: | 1993-09-27 00:00:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 2365. | B. J. MacFadden. 1977. Magnetic polarity stratigraphy of the Chamita Formation stratotype (Mio-Pliocene) of North-central New Mexico. American Journal of Science 200 [J. Alroy/J. Alroy/J. Ju] |
Secondary references:
| 6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
| 1799 | J. A. Harrison. 1981. A review of the extinct wolverine, Plesiogulo (Carnivora: Mustelidae), from North America. Smithsonian Contributions to Paleobiology 46:1-27 [J. Alroy/J. Alroy/J. Alroy] | |
| 2381 | B. J. MacFadden, N. M. Johnson, and N. D. Opdyke. 1979. Magnetic polarity stratigraphy of the Mio-Pliocene mammal-bearing Big Sandy Formation of western Arizona. Earth and Planetary Science Letters 44(3):349-364 [J. Alroy/J. Alroy/J. Marcot] | |
| 3380 | R. H. Tedford and S. F. Barghoorn. 1993. Road Log Neogene geology of the Española Basin, New Mexico. New Mexico Museum of Natural History Bulletin 2:169-178 [J. Alroy/J. Alroy/M. Uhen] | |
| 3632 | J. A. White. 1988. The Archaeolaginae (Mammalia, Lagomorpha) of North America, Excluding Archaeolagus and Panolax. Journal of Vertebrate Paleontology 7(4):425-450 [J. Alroy/J. Alroy/J. Ju] |