Where: San Diego County, California (32.9° N, 117.1° W: paleocoordinates 32.7° N, 116.1° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Huesos/Tapiado Member (Palm Spring Formation), Blancan (4.9 - 1.8 Ma)
• said to be Blancan
Environment/lithology: terrestrial
Primary reference: M. L. Cassiliano. 1999. Biostratigraphy of Blancan and Irvingtonian mammals in the Fish Creek-Vallecito Creek section, southern California, and a review of the Blancan-Irvingtonian boundary. Journal of Vertebrate Paleontology 19(1):169-186 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 20115: authorized by John Alroy, entered by John Alroy on 21.09.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
the Vallecito Creek interval is said to span the upper 1267 m of the section or "CU 47.0-66.9," which implies about 63.4 m per CU; however, a figure of 61 m per CU is given elsewhere in the text; 63.4 m per CU is used here
spans the C2r.1r - C2An.1n transition (2.581 Ma: Cande and Kent 1995); this is confirmed by a date of 2.3 +/- 0.2 Ma (FT on "ash") for the top of the Arroyo Seco interval mentioned by Lundelius et al. 1987
Mammalia | |
Erethizon bathygnathum Wilson 1935 North American porcupine | |
Spermophilus sp. Cuvier 1825 ground squirrel | |
Geomyidae indet. Bonaparte 1845 pocket gopher
Nerterogeomys garbanii White and Downs 1961 pocket gopher
Nerterogeomys anzensis Becker and White 1981 pocket gopher | |
Dipodomys compactus True 1889 Gulf Coast kangaroo rat
Dipodomys hibbardi Zakrzewski 1981 kangaroo rat
Perognathinae indet. Coues 1875 rodent | |
| |
Pewelagus dawsonae White 1984 rabbit
Sylvilagus hibbardi White 1984 cottontail rabbit | |
Tapirus sp. Brisson 1762 tapir | |
Platygonus sp. Leconte 1848 peccary | |
Camelops sp. Leidy 1854 camel
Hemiauchenia sp. Gervais and Ameghino 1880 camel | |
Capromeryx sp. Matthew 1902 pronghorn | |
Canis rufus Audubon and Bachman 1851 red wolf | |
Megalonyx sp. Harlan 1825 edentate | |
Mylodontidae indet. Ameghino 1889 edentate |