Collins 1969

Samples that cite this reference

Lab number Site Province / State Normalized age δ13C (per mil)
Tx-622 41VV87 (Perry Calk) TX
Tx-633 41VV422 (Techno Bajo) TX
Tx-630 41VV422 (Techno Bajo) TX
Tx-629 41VV87 (Perry Calk) TX
Tx-620 41VV87 (Perry Calk) TX