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- Lab number
- ISGS-489 B
- Field number
- NIU-28
- Material dated
- mastodon bone; os de mastodonte
- Taxa dated
- Mammut americanum
- Locality
- LaSalle County, Illinois
- Map sheet
- e
- Elevation (m ASL)
- 203.0
- Submitter
- J.W. Springer
- Date updated
- May 20, 1999
- Measured Age
- 10990 ± 110
- Normalized Age
- 11070 ± 110
- δ13C (per mil)
- -20.0
- Significance
- palaeobiology; paléobiologie
- Context
- olive-gray clay