Fig. (4) Locations (marked with ‘spectrum’ or small black diagram) of EDX measurements for nano-scale spheroids and fossils from the Ediacaran Doushantuo Formation in the Jijiawan section, Hubei, China.A, C, D Soccer ball-like spheroids. B Jar-like body. E Colony-like spheroid, obtained from organic residues of acid maceration. F Isolated spheroid, obtained from organic residues of acid maceration.