Crane and Griffin, 1962: 195

Samples that cite this reference

Lab number Site Province / State Normalized age δ13C (per mil)
M-1065 13OB4 (Wittrock) IA 525 ± 75 -25.0
M-984 13ML62 (Hill) IA 7250 ± 200 -25.0
M-1082 39ST11 (Fay Tolton) 860 ± 75 -25.0
NWU-50 39ST11 (Fay Tolton)
WIS-722 39ST11 (Fay Tolton) 885 ± 50 -25.0
WIS-728 39ST11 (Fay Tolton) 920 ± 60 -25.0