Crane and Griffin, 1964: 2

Samples that cite this reference

Lab number Site Province / State Normalized age δ13C (per mil)
M-1402 20KZ-? (Scotts muskox) MI 11180 ± 400 -20.0
M-1343 13WB6 (Casey's Mound group) IA 885 ± 100 -19.0