Remarkable Preservation of Microfossils and Biofilms in Mesoproterozoic Silicified Bitumen Concretions from Northern China

Figure 5

SEM photomicrographs of the spherical bacteria fossils and the colonial structures. EDS data of (a) and (d) were showed in Table 1.

(a)

(b)

(c)

(d)

(e)

(f)