Crane and Griffin, 1968: 79

Samples that cite this reference

Lab number Site Province / State Normalized age δ13C (per mil)
M-1768 20MA7 (Boven Earthworks) MI 480 ± 100 -25.0
GX-669A 33RO3 (Morrison Village) OH
GX-669B 33RO3 (Morrison Village) OH
M-1760 33RO3 (Morrison Village) OH
M-1761 33RO3 (Morrison Village) OH