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- Lab number
- M-1254
- Material dated
- Bone
- Taxa dated
- Mammut americanum 3rd molar; mastodon bone
- Type of date
- paleontological
- Locality
- Gratiot
- Submitter
- R.O. Kapp
- Date uploaded
- January 17, 2024
- Updater
- Wyoming Team
- Date updated
- December 31, 2020
- Measured Age
- 10700 ± 400
- Normalized Age
- 10780 ± 400
- δ13C (per mil)
- -20.0
- Significance
- palaeobiology; paléobiologie
- Context
- on gravelly bed, covered by marl and by 2 ft of peat, with pollen and macrofossils of spruce-pine forest
- Additional information
- Radiometric