Upper Cady Mountains: Hemingfordian, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Carnivora - Canidae
Tomarctus cf. hippophaga (Matthew and Cook 1909)
"hippophagus"
Mammalia - Perissodactyla - Equidae
Merychippus tehachapiensis Buwalda and Lewis 1955
synonym of Parapliohippus carrizoensis
Mammalia - Perissodactyla - Rhinocerotidae
Diceratherium sp. Marsh 1875
    = Rhinocerotidae indet. Gray 1821
Woodburne 1998
Mammalia - Camelidae
Miolabis tenuis Matthew 1924
recombined as Paramiolabis tenuis
cf. Aepycamelus sp. Macdonald 1956
Mammalia - Antilocapridae
Merycodus sp. Leidy 1854
presumably sensu Frick
Mammalia - Rodentia - Castoridae
cf. Anchitheriomys sp. Roger 1885
Mammalia - Rodentia - Heteromyidae
Proheteromys sulculus Wilson 1960
see common names

Geography
Country:United States State/province:California County:San Bernardino
Coordinates: 34.8° North, 117.0° West (view map)
Paleocoordinates:33.9° North, 111.4° West
Basis of coordinate:based on political unit
Time
Period:Neogene Epoch:Miocene
Stage:Burdigalian 10 m.y. bin:Cenozoic 5
*Period:Tertiary
Key time interval:Hemingfordian
Age range of interval:20.43000 - 15.97000 m.y. ago
Age estimate:17.03 Ma (paleomagnetic)maximum 17.9 ± 0.3 Ma (K-Ar)
* legacy (obsolete) database fields
Stratigraphy
Formation:Hector
Local section:CadyM Local bed:3
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: multiple localities from a 100 m interval outcropping across about 2 km, most of which are about 65 m above an ignimbrite dated at 17.9 +/- 0.3 Ma (K-Ar according to MacFadden et al. 1990)
in chron C5Cr according to paleomag, which seems reliable based on two KA dates: MacFadden et al. 1990; this spans 16.726 to 17.277 Ma (avg 17.03 Ma): Cande and Kent 1995
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:general faunal/floral analysis
Metadata
Database number:19586
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:B. Allen Research group:vertebrate
Created:1995-01-05 00:00:00 Last modified:2023-07-29 06:34:59
Access level:the public Released:1995-01-05 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

3759. M. O. Woodburne, S. T. Miller, and R. H. Tedford. 1982. Stratigraphy and geochronology of Miocene strata in the central Mojave Desert, California. Geologic excursions in the California deserts and adjacent transverse ranges: fieldtrip guidebook and volume prepared for the joint meeting of the Cordilleran Section--GSA and Pacific Section--AAPG, April 9-11, 2001, Universal City, California : fieldtrips 1-4 47-64 [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]
3757 M. O. Woodburne. 1998. Arikareean and Hemingfordian faunas of the Cady Mountains, Mojave Desert Province, California. Geological Society of America Special Paper 325:197-210 [J. Alroy/J. Alroy/J. Marcot]