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. 2015 Nov 9;59(1):89–108. doi: 10.1111/pala.12212

Figure 7.

Figure 7

Evidence of Eohalothece found in association with biofilms. A, bedding‐parallel petrographic thin section in normal white light showing the distributed individual cells of Eohalothece lacustrina preserved in situ in a phosphate nodule, arrow points to a specimen of Leiosphaeridia ternata Timofeev, sample TOR08‐32, slide CW1C, type section of the Diabaig Formation, Lower Diabaig, Scotland. B, individual cell of E. lacustrina demonstrating elliptical shape from the thin‐section population shown in A. C, somewhat elongate individual cell of E. lacustrina from the thin‐section population shown in A. D, individual cell of E. lacustrina demonstrating its tapered elliptical form from the thin section population shown in A. E, individual cell of E. lacustrina demonstrating its tapered elliptical form, from maceration, Nonesuch Shale, sample NON09‐3B (paratype). F, macerated palynomorphs (L. ternata and E. lacustrina) associated with amorphous organic matter, which is a possible biofilm fragment, sample NON12‐22, Nonesuch Shale, well WPB5, 89 m depth. G, macerated palynomorphs (L. ternata and E. lacustrina paratype) associated with amorphous organic matter, possibly the remains of biofilm, sample NON09‐3B, Nonesuch Shale, well PC1, 93 m depth. H, microbial mat fragment with E. lacustrina and straight sheaths (similar to Siphonophycus sp.) embedded in amorphous organic matter, sample TOR09‐90B, Kinloch Fm, Ob Gauscavaig, Sleat Peninsula, Isle of Skye, Scotland. Scale bars represent 10 μm (A, F–H); and 5 μm (B–E). Colour online.