Where: Contra Costa County, California (37.8° N, 121.9° W: paleocoordinates 37.2° N, 118.2° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Green Valley Formation, Clarendonian (12.5 - 9.4 Ma)
Environment/lithology: terrestrial; siliciclastic sediments
Size class: macrofossils
Reposited in the UCMP
Primary reference: 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]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 19185: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Patricia Holroyd and Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
slightly below UCMP V-3724, which yielded only a "fragment of a mastodont ulna"
Mammalia | |
Woodburnehyus grenaderae n. gen. n. sp.5
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"Merychyus cf. major" = Ustatochoerus major2
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Procamelus cf. grandis Gregory 1939 camel
Pliauchenia cf. magnifontis Gregory 1939 camel | |
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Hipparion forcei, "Pliohippus leardi" = Dinohippus leardi
Hipparion forcei Richey 1948 hipparionine horse
"Pliohippus leardi" = Dinohippus leardi Drescher 1941 horse | |
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"Osteoborus diabloensis n. sp." = Borophagus littoralis VanderHoof 1931 bone-crushing dog
Aelurodon cf. taxoides7 Hatcher 1894 bone-crushing dog confirmed by Baskin 1998a, Wang et al. 1999; "A. cf. aphobus"; apparently includes "Osteoborus ricardoensis" (see footnote by Stirton in Richey 1948, p. 3)
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"Citellus (Otospermophilus) sp." = Otospermophilus
"Citellus (Otospermophilus) sp." = Otospermophilus Brandt 1844 squirrel | |
"Eucastor lecontei" = Prodipoides lecontei
"Eucastor lecontei" = Prodipoides lecontei Merriam 1896 beaver | |
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Aves | |
Grus conferta n. sp.4
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