Figure 4: Scanning electron microscopic–energy-dispersive X-ray analysis of fossil skin (Spectrum 1 and 2) and sediment (Spectrum 3). | Nature Communications

Figure 4: Scanning electron microscopic–energy-dispersive X-ray analysis of fossil skin (Spectrum 1 and 2) and sediment (Spectrum 3).

From: Soft tissue preservation in a fossil marine lizard with a bilobed tail fin

Figure 4

Note distinct peaks in calcium (Ca) and oxygen (O) in all three spectra, suggesting that both the integument and sediment primary comprise calcium carbonate. The dashed line demarcates skin replacement structures (bottom) and sedimentary matrix (top). Scale bar, 1 mm.

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