Crane and Griffin, 1961: 112

Samples that cite this reference

Lab number Site Province / State Normalized age δ13C (per mil)
M-759 11P690 (Renchville Mound) IL 1990 ± 100 -25.0
M-760 11P782 (Caterpillar Mound) IL 2010 ± 75 -25.0