Figure 1.

Total ion chromatograms of pyrolysates of the 11 samples studied. (A) Fresh skin; (B) Mammuthus primigenius; (C) Equus caballus; (D) Mylodon darwinii; (E) Equus ferus; (F) Equus hemionus; (G) Homo neandertalensis; (H) Papio cf. cynocephalus; (I) Ursus spelaeus; (J) Equus ferus; (K) vertebrate; (L) Megalonyx sp. Numbers and symbols above the peaks correspond to Table 2. ∗, contaminants; ⋅, nonextractable lipids; B_n, alkylbenzenes; I_n, alkylindenes; N_n, alkylnaphthalenes; F_n, fluorene; n, the extent of alkyl substitution (i.e., 0, none; 1, methyl; 2, dimethyl or ethyl; etc.).