UCMP V-3310, Black Hawk Ranch: Clarendonian, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Sciuridae
Citellus (Otospermophilus) sp. (Brandt 1844)
original and current combination Otospermophilus
Mammalia - Rodentia - Castoridae
Eucastor lecontei (Merriam 1896)
recombined as Prodipoides lecontei
Mammalia - Lagomorpha - Leporidae
Alilepus hibbardi White 1991
White 1991
presumably = "Hypolagus sp."
Mammalia - Perissodactyla - Equidae
Hipparion forcei Richey 1948
Pliohippus leardi Drescher 1941
recombined as Dinohippus leardi
Mammalia - Tayassuidae
Prosthennops sp. Matthew and Gidley 1904
    = informal Clarendonian peccary sp.
Wright 1993
said to be a new species not found elsewhere; species "F" of Wright 1983; see also Wright 1998
    = Woodburnehyus grenaderae n. gen., n. sp. Prothero and Pollen 2013
Prothero and Pollen 2013
Mammalia - Camelidae
Alticamelus sp. Matthew 1901
    = Aepycamelus sp. Macdonald 1956
Macdonald 1948
presumably includes "Megatylopus sp."
Procamelus cf. grandis Gregory 1939
Pliauchenia cf. magnifontis Gregory 1939
Mammalia - Antilocapridae
Capromeryx sp. Matthew 1902
Webb and Woodburne 1964
"? Merycodus"
Mammalia - Merycoidodontidae
Ustatochoerus major (Leidy 1858)
    = Merychyus cf. major Leidy 1858
Edwards 1982
recombined as Ustatochoerus major
"? Metoreodon sp."; "? U. sp." of Macdonald 1948b
Mammalia - Carnivora - Nimravidae
Barbourofelis lovei Baskin 1981
    = Barbourofelis loveorum Baskin 1981
Baskin 1981
"Ischyrosmilus cf. osborni"; "Machairodontinae indet." of Macdonald 1948
Mammalia - Carnivora - Felidae
Pseudaelurus thinobates Macdonald 1948
    = Nimravides thinobates Macdonald 1948
Macdonald 1948
"Metailurus abeli"
Mammalia - Carnivora - Procyonidae
Caninae indet. Gill 1872
    = Procyonidae indet. Gray 1825
Webb et al. 1981
close to Urocyon of Macdonald 1948b; a new genus and species according to Webb et al., who use the unpublished manuscript name "Proturocyon macdonaldi"
Mammalia - Carnivora - Mustelidae
Brachypsalis sp. Cope 1890
    = Mustelinae indet. Fischer 1817
Macdonald 1948
Leptarctus sp. Leidy 1856
    = Leptarctus wortmani Matthew 1924
Wagner and Reynolds 1983
includes "? Bassariscus sp." and "Bassariscus parvus" of Macdonald 1948b according to Webb et al. 1981; might include "Procyoninae" of Macdonald 1948b, see his discussion
Mammalia - Carnivora - Canidae
Vulpes vafer (Leidy 1858)
    = Leptocyon vafer Leidy 1858
Macdonald 1948
Aelurodon cf. taxoides Hatcher 1894
Tedford et al. 1987
confirmed by Baskin 1998a, Wang et al. 1999; "A. cf. aphobus"; apparently includes "Osteoborus ricardoensis" (see footnote by Stirton in Richey 1948, p. 3)
Osteoborus diabloensis n. sp. Richey 1938
synonym of Borophagus littoralis
Mammalia - Proboscidea - Mammutidae
Gomphotherium simpsoni (Stirton 1939)
    = Gomphotherium obscurum Leidy 1869
Savage 1955
"Trilophodon sp."; "G. sp." of Macdonald 1948b DUPLICATE REF 3015 or 3016
see common names

Geography
Country:United States State/province:California County:Contra Costa
Coordinates: 37.8° North, 121.9° West (view map)
Paleocoordinates:37.2° North, 118.2° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Neogene Epoch:Miocene
*Period:Tertiary
Key time interval:Clarendonian
Age range of interval:13.60000 - 10.30000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Green Valley
Local section:MDiab Local bed:3
Local order:bottom to top
Lithology and environment
Primary lithology: "siliciclastic"
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Museum repositories:UCMP
Taxonomic list comments:much lower in the fm. than tuff dated at 5.9 +/- 0.6 and 6.3 +/- 0.1 Ma: Tedford et al. 1987
slightly below UCMP V-3724, which yielded only a "fragment of a mastodont ulna"
Metadata
Database number:19185
Authorizer:J. Alroy, J. Marcot Enterer:J. Alroy, J. Marcot
Modifier:M. Clapham Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2017-04-16 19:41:01
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

2902. K. A. Richey. 1948. Lower Pliocene horses from Black Hawk Ranch, Mount Diablo, California. University of California Publications, Bulletin of the Department of Geological Sciences 28(1):1-44 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1027 J. A. Baskin. 1981. Barbourofelis (Nimravidae) and Nimravides (Felidae), with a Description of Two New Species from the Late Miocene of Florida. Journal of Mammalogy 62(1):122-139 [J. Alroy/J. Alroy/M. Uhen]
1428 S. W. Edwards. 1982. A New Species of Hipparion (Mammalia: Equidae) from the Clarendonian (Miocene) of California. Journal of Vertebrate Paleontology 2(2):173-183 [J. Alroy/J. Alroy/J. Marcot]
2339 J. R. Macdonald. 1948. The Pliocene carnivores of the Black Hawk Ranch Fauna. University of California Publications, Bulletin of the Department of Geological Sciences 28(3):53-80 [J. Alroy/J. Alroy/J. Marcot]
58090 D. R. Prothero and A. Pollen. 2013. New Late Miocene Fossil Peccaries From California and Nebraska. Kirtlandia 58:42-53 [J. Marcot/J. Marcot]
3015 D. E. Savage. 1955. Nonmarine Lower Pliocene Sediments in California. A Geochronologic-Stratigraphic Classification. University of California Publications in Geological Sciences 31(1):1-26 [J. Alroy/J. Alroy/J. Marcot]
6198 R. H. Tedford, T. Galusha, M. F. Skinner, B. E. Taylor, R. W. Fields, J. R. Macdonald, J. M. Rensberger, S. D. Webb, and D. P. Whistler. 1987. Faunal succession and biochronology of the Arikareean through Hemphillian interval (late Oligocene through earliest Pliocene epochs) in North America. In M. O. Woodburne (ed.), Cenozoic Mammals of North America: Geochronology and Biostratigraphy 153-210 [J. Alroy/J. Alroy/P. Wagner]
3522 H. M. Wagner and R. E. Reynolds. 1983. Leptarctus ancipidens (White) (Carnivora: Mammalia) from the Punchbowl Formation, Cajon Pass, California. Bulletin of the Southern California Academy of Sciences 82(3):131-137 [J. Alroy/J. Alroy/J. Marcot]
3581 S. D. Webb, B. J. MacFadden, and J. A. Baskin. 1981. Geology and paleontology of the Love Bone Bed from the Late Miocene of Florida. American Journal of Science 281:513-544 [J. Alroy/J. Alroy/M. Uhen]
6268 S. D. Webb and M. O. Woodburne. 1964. The beginning of continental deposition in the Mount Diablo area. Guidebook to the Mount Diablo field trip, 1964 70-78 [J. Alroy/J. Alroy/J. Alroy]
3633 J. A. White. 1991. North American Leporinae (Mammalia: Lagomorpha) from late Miocene (Clarendonian) to latest Pliocene (Blancan). Journal of Vertebrate Paleontology 11(1):67-89 [J. Alroy/J. Alroy/J. Alroy]
6242 D. B. Wright. 1993. Evolution of sexually dimorphic characters in peccaries (Mammalia, Tayassuidae). Paleobiology 19(1):52-70 [J. Alroy/J. Alroy/J. Alroy]