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- Lab number
- Beta-77872
- Material dated
- Other
- Taxa dated
- oak leaves
- Type of date
- Geological
- Locality
- San Juan
- Date uploaded
- January 18, 2024
- Updater
- Wyoming Team
- Date updated
- December 31, 2020
- Normalized Age
- 4070 ± 60
- δ13C (per mil)
- -27.8
- Context
- Leaves (PN590.1) under a large roof spall within the upper portion of Unit IV.