Figure 3
From: Chemical characterization of pterosaur melanin challenges color inferences in extinct animals
Mass spectrum of CPCA 3590 headcrest melanin. (A) Mass spectrum from the degradation products of alkaline peroxide oxidation. (B) Hypothetic structural modifications of eumelanin from T. imperator (based on Ito et al.5), according to the most abundant yielding recovered from the oxidation process (i.e. PTeCA). (C) Oxidation was performed on four separate occasions and the results were shown as mean ± SEM. Values for the sediment are close to the detection limits. Values are in ng/mg. Differences as evaluated by students’ t-Test (two-tailed) are P < 0.01 except for PDCA (P < 0.05).
