Figure 2 | Scientific Reports

Figure 2

From: Rapid encapsulation of true ferns and arborane/fernane compounds fossilised in siderite concretions supports analytical distinction of plant fossils

Figure 2

(A) GC–MS total ion chromatograms of aliphatic fractions of true fern sample TF-1 (Diplazites unita) (i) fossil, (ii) inner matrix, and (iii) outer matrix. Numbers represent carbon number of straight-chain n-alkanes; Pr pristane, Ph phytane. (B) Triterpenoid region of aliphatic fraction of TF-1 fossil. Peaks are labelled using roman numerals according to structure numbers in Fig. S1. C30 hopenes which have been approximately assigned based on their mass spectra are indicated by black squares (mass spectra are shown in Fig. S3A).

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