FIGURE 6.2. (A–E) Filamentous cyanobacterial microfossils from the 3.46-billion-year-old rocks of the
Warrawoona Group, North Pole, Western Australia, showing the distinctive chains of cells. These are virtually
identical to (F) (shown on next page), the modern filamentous cyanobacterium, Lyngbya, in every detail of the
size, shape, and arrangement of the cells. (Photos courtesy J. W. Schopf)
(A 1 ) (A2) (C 1 )(D 1 )(E 1 )(A1)(B)(C1) (C2)(D1) (D2)(E1) (E2)0 10μm0 10μm0 10μm0 10 20μm