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- Lab number
- ISGS-428 B
- Material dated
- mastodon bone collagen; collagène osseux de mastodonte
- Taxa dated
- Mammut americanum tusk
- Locality
- 5.3 km east-northeast of Roodhouse, Greene County, Illinois
- Map sheet
- e
- Submitter
- M. Leman and P. Sugent
- Date updated
- May 20, 1999
- Measured Age
- 11040 ± 110
- Normalized Age
- 11120 ± 110
- δ13C (per mil)
- -20.0
- Significance
- palaeobiology; paléobiologie
- Context
- sand at edge of creek