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Collection place
- The Americas326
- North America296
- United States292
- California287
- San Francisco Bay Area, California131
- Northern California98
- North Central California82
- Alameda County, California71
- Fremont, Alameda County, California47
- Southern California44
- San Joaquin County, California42
- Channel Islands, Ventura County, California40
- San Nicolas Island, Southern Channel Islands, Ventura County40
- Ventura County, California40
- CA-Ala-328 (Patterson Mound), Coyote Hills, Fremont37
- CA-SNI-NL-1, San Nicolas Island, Southern Channel Islands32
- Contra Costa County, California31
- Peru30
- South America30
- Sacramento County, California28