22 datasets found

R (rare) = 1 to 10, C (common) = 11 to 25, A (abundant) = >25 specimens

Specimens picked by Dorothee Spiegler. Isotope data measured by Kyaw Winn in 1988 with the CARBO KIEL Massenspectrometer Finnigan MAT 251, Christian-Albrechts-University, Kiel,...