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Microfossils of the mid-Paleozoic Drummond Basin, Queensland, Australia. (A) Plane-polarized light photomicrograph of several well-preserved filamentous microfossils, indicated by arrows. (B) Detailed view of a microfossil from panel A (indicated by the left-most arrow in panel A). (C) Confocal laser scanning microscope image of the microfossil from panel B, highlighting the organic cell walls via fluorescence.
