Fig. 2: Zinc isotope (δ66Zn) composition of fossil elasmobranch enameloid.
From: Trophic position of Otodus megalodon and great white sharks through time revealed by zinc isotopes
Teeth are from the Early Pliocene of Japan, North Carolina (NC) and Florida (FL), Pliocene to Miocene transition of Florida, the Early Miocene of North Carolina, Germany and Malta. For more details on the sample background, see Supplementary Data 1, Supplementary Note 2. Silhouettes are not to scale. Measurement uncertainty is indicated at the 2 SD level. Samples are colour-coded following their genus, regardless of locality. Source data are provided as a Source Data file.
