Valastro et al., 1972: 475

Samples that cite this reference

Lab number Site Province / State Normalized age δ13C (per mil)
Tx-810 34BK2 (Edwards I) OK 310 ± 70 -25.0
Tx-811 34BK2 (Edwards I) OK 200 ± 70 -25.0
Tx-812 34BK2 (Edwards I) OK 550 ± 70 -25.0
Tx-813 34BK2 (Edwards I) OK 290 ± 70 -25.0
Tx-814 34BK2 (Edwards I) OK 450 ± 70 -25.0
Tx-807 34BK44 (Edwards II) OK 1140 ± 70 -25.0
Tx-808 34BK44 (Edwards II) OK 980 ± 70 -25.0
Tx-809 34BK44 (Edwards II) OK 1100 ± 80 -25.0