Ricardo: Clarendonian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
- Proboscidea
- Gomphotheriidae
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Serbelodon burnhami
Osborn 1933
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may include type of Osborn 1933 from "just above the last basalt flow some miles northeast of Ricardo post office and apparently in or near the base of the Ricardo" although Whistler and Burbank do not indicate the type's position | ||||||||||
Mammalia
- Carnivora
- Nimravidae
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Felidae indet.
Gray 1821
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= Barbourofelis osborni
Merriam 1919
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Tedford 1961 | |||||||||
synonym of Barbourofelis whitfordi | ||||||||||
Mammalia
- Carnivora
- Mustelidae
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Mustelidae indet.
Fischer 1817
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Tedford 1961 | |||||||||
Chasse Q.; may or may not include type of Mustela buwaldi of Merriam 1919 from UCMP 2282 | ||||||||||
Mammalia
- Carnivora
- Canidae
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Tomarctus robustus n. sp.
Green 1948
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recombined as Carpocyon robustus | ||||||||||
see Tedford 1961; from UCMP V-3732 | ||||||||||
Epicyon aphobus
(Merriam 1919)
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synonym of Epicyon haydeni | ||||||||||
includes "Aelurodon aphobus" and possibly "Osteoborus cf. californicus" of Tedford 1961 from Chasse Q.; includes type from UCMP 2281 and possibly referred specimens from UCMP 2769, 2733 of Merriam 1919; listed by Wang et al. 1999 at LACM 1553, 5428, 5537, 6041, LACM-CIT 6, 1003, UCMP V-2769 | ||||||||||
Vulpes sp.
Frisch 1775
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= Leptocyon vafer
Leidy 1858
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Alroy 2002 | |||||||||
replaces ID of Tedford 1961; may include "Canis nr. vafer" of Merriam 1919 from UCMP 2731 | ||||||||||
Mammalia
- Perissodactyla
- Equidae
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? Protohippus tantalus n. sp.
Merriam 1913
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Merriam 1913 | |||||||||
UCMP 19434 and 21221 | ||||||||||
Dinohippus cf. leardi
(Drescher 1941)
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Pliohippus fairbanksi n. sp.
Merriam 1915
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Merriam 1915 | |||||||||
synonym of Protohippus tantalus | ||||||||||
UCMP 19789 | ||||||||||
Pliohippus tehonensis
(Merriam 1915)
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? Hipparion mohavense n. sp.
Merriam 1913
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Merriam 1913 | |||||||||
UCMP 19787; may include type of "Hipparion mohavense callodonte" from UCMP 2281, see Merriam 1915d, 1919; "H. cf. mohavense" of Tedford 1961 | ||||||||||
= Cormohipparion sp.
Skinner and MacFadden 1977
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Woodburne 2007 | |||||||||
Hipparion forcei
Richey 1948
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Hipparion tehonense
(Merriam 1916)
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recombined as Hipparion gratum tehonense | ||||||||||
Mammalia
- Perissodactyla
- Rhinocerotidae
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Teleoceras meridianum
(Leidy 1865)
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Prothero 2005 | |||||||||
Peraceras superciliosum
(Cope 1880)
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Prothero 2005 | |||||||||
original and current combination Peraceras superciliosus | ||||||||||
Mammalia
- Camelidae
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Camelidae indet.
Gray 1821
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Tedford 1961 | |||||||||
Chasse Q. | ||||||||||
Mammalia
- Merycoidodontidae
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Ustatochoerus californicus
(Merriam 1919)
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"U. cf. californicus" of Tedford 1961 from Chasse Quarry | ||||||||||
Mammalia
- Antilocapridae
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Paracosoryx furlongi
(Frick 1937)
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Cosoryx sp.
Leidy 1869
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possibly "Merycodus sp." of Tedford 1961 from Chasse Q. | ||||||||||
Plioceros sp.
Frick 1937
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"Sphenophalos" of Tedford 1961 | ||||||||||
Mammalia
- Soricidae
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"Sorex" sp.
Linnaeus 1758
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Alluvisorex chasseae n. sp.
(Tedford 1961)
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from Chasse Quarry: see Tedford 1961 | ||||||||||
Mammalia
- Talpidae
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Scapanus shultzi n. sp.
Tedford 1961
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from UCMP V-5376; referred specimen from UCMP V-3732: Tedford 1961 | ||||||||||
Mammalia
- Erinaceidae
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Lanthanotherium sp.
(Filhol 1888)
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original and current combination Lantanotherium | ||||||||||
Mammalia
- Rodentia
- Sciuridae
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Sciuridae indet.
Gray 1821
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Tedford 1961 | |||||||||
Chasse Q. | ||||||||||
Mammalia
- Rodentia
- Heteromyidae
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Cupidinimus tertius
(Hall 1930)
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Perognathus sp.
Maximillian 1839
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= Perognathus minutus
James 1963
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Alroy 2002 | |||||||||
replaces ID of Tedford 1961 from Chasse Q. | ||||||||||
Perognathus furlongi
Gazin 1930
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Whistler 1991 | |||||||||
Mammalia
- Rodentia
- Geomyidae
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Geomyidae indet.
Bonaparte 1845
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= "Thomomys" sp.
Wied-Neuwied 1839
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Tedford 1961 | |||||||||
Mammalia
- Rodentia
- Cricetidae
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Copemys dentalis
(Hall 1930)
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original and current combination Peromyscus dentalis | ||||||||||
"Peromyscus" of Tedford 1961 from Chasse Q. | ||||||||||
Mammalia
- Lagomorpha
- Leporidae
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Hypolagus sp.
Dice 1917
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= Archaeolaginae indet.
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Tedford 1961 | |||||||||
see common names |
Geography
Country: | United States | State/province: | California | County: | Kern |
Coordinates: | 35.4° North, 118.0° West (view map) | ||||
Paleocoordinates: | 36.0° North, 115.6° West | ||||
Basis of coordinate: | based on political unit |
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: | Dove Spring | ||
Local section: | DoveS | Local bed: | 3 |
Local order: | bottom to top |
Lithology and environment
Primary lithology: | not reported |
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Reason for describing collection: | biostratigraphic analysis |
Museum repositories: | LACM |
Taxonomic list comments:upper Mbr. 4 and lower Mbr. 5; = upper "C. avawatz./ P. furlongi" and lower "E. aphobus/H. forcei" zones basalt at top of Mbr. 4 dated at 10.5 +/- 0.25 Ma (KA); level slightly higher than this dated at 10.4 +/- 1.6 Ma (FT on zircon); both dates are rejected by Perkins et al. 1998, who revise the former as 10.94 +/- 0.03 Ma (Ar/Ar) most earlier lists (e.g., Merriam 1917) span the entire formation Chasse Quarry (LACM 1553) and two UCMP localities placed here based on location of types of "Hesperosorex" chasseae and "Tomarctus" robustus status unclear: Pliohippus tantalus Merriam 1919: "between the uppermost and second basalt flows 2 1/2 miles north of Ricardo Post Office" |
Metadata
Also known as: | Chasse Quarry; LACM 1553; UCMP V-3732, V-5376; near Ricardo Postoffice | ||
Database number: | 19517 | ||
Authorizer: | J. Alroy, J. Marcot | Enterer: | J. Alroy, J. Marcot |
Modifier: | J. Marcot | Research group: | vertebrate |
Collections that are a subset of this one: | |||
Created: | 1993-02-18 00:00:00 | Last modified: | 2020-04-20 15:44:36 |
Access level: | the public | Released: | 1993-02-18 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
3627. | D. P. Whistler and D. W. Burbank. 1992. Miocene biostratigraphy and biochronology of the Dove Spring Formation, Mojave Desert, California, and characterization of the Clarendonian mammal age (late Miocene) in California. Geological Society America Bulletin 104(6):644-658 [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] | |
14303 | J. C. Merriam. 1913. New Protohippine Horses From Tertiary Beds on the Western Border of the Mohave Desert. University of California Publications Bulletin of the Department of Geology 7(23):435-442 [R. Whatley/R. Whatley/J. Marcot] | |
2565 | J. C. Merriam. 1915. New Horses From the Miocene and Pliocene of California. University of California Publications, Bulletin of the Department of Geology 9(4):49-58 [J. Alroy/J. Alroy/J. Marcot] | |
51726 | D. R. Prothero. 2005. The Evolution of North American Rhinoceroses. 1-218 [J. Marcot/J. Marcot] | |
3377 | R. H. Tedford. 1961. Clarendonian Insectrivora from the Ricardo Formation, Kern County California. Bulletin of the Southern California Academy of Sciences 60(2):57-76 [J. Alroy/J. Alroy/M. Uhen] | |
3626 | D. P. Whistler. 1991. Geologic history of the El Paso Mountains region. San Bernardino County Museum Association Quarterly 38(3):108-113 [J. Alroy/J. Alroy/J. Alroy] | |
45368 | M. O. Woodburne. 2007. Phyletic diversification of the Cormohipparion occidentale complex (Mammalia; Perissodactyla, Equidae), Late Miocene, North America, and the origin of the Old World Hippotherium datum. Bulletin of the American Museum of Natural History 306(1):1-138 [P. Wagner/P. Wagner] |