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United States / CA / Contra Costa County / CA-CCO-? / I-6207
- Lab number
- I-6207
- Material dated
- Shell
- Taxa dated
- freshwater, freshwater
- Type of date
- Geological
- Locality
- Contra Costa
- Date uploaded
- January 15, 2024
- Updater
- Wyoming team
- Date updated
- December 31, 2020
- Measured Age
- 6260 ± 100
- Context
- Found by Woodward-Lundgren & Assoc. during fault study in 1972 (location inferred)