Emerson, Thomas E., and Jeffrey S. Girard 2004 Dating Gahagan and it's Implications for Understanding Cahokia-Caddo Interactions. Southeastern Archaeology 23(1):57 - 64.

Samples that cite this reference

Lab number Site Province / State Normalized age δ13C (per mil)
ISGS-A465 16RR1 (Gahagan) 910 ± 35 -25.3
ISGS-A466 16RR1 (Gahagan) 950 ± 40 -23.3
UGa-12296 16RR1 (Gahagan) 1000 ± 40 -24.91