Fig. 3
From: Fungal colonies in open fractures of subseafloor basalt


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ESEM images and microphotograph of fossilized filamentous structures: a, b sample 197-1205-34R-5; c, d sample 197-1206-4R-2. a ESEM image showing a cross section of a filament with a central strand. b Optical microphotograph of a filamentous structure showing septa. c ESEM image showing a web-like convergence of several filamentous structures. d ESEM close-up image of a fossilized filamentous structure showing mineralization of montmorillonite