Fig. 3 in New finds of skeletal fossils in the terminal Neoproterozoic of the Siberian Platform and Spain

Fig. 3. SEM images of late Ediacaran Cloudina. A, C–E. Cloudina ex gr. C. riemkeae Germs, 1972; Kyyry−Ytyga (1.6 km downstream from Ulakhan−Ytyga Creek mouth), Yudoma River, right bank, Siberian Platform, Russia, Ust'−Yudoma Formation. A. SNIIGGiMS 1630/1, tube fragment with abraded shell wall. C. SNIIGGiMS 1630/2, fragment of tube with holes formed after microdolomite crystal dissolution. D. SNIIGGiMS 1630/3, detail of tube fragment with holes formed after microdolomite crystal dissolution. E. SNIIGGiMS 1630/4, tube nested funnels. B, F–H. Cloudina ex gr. C. hartmanae Germs, 1972; Tirteafuera River, Abenójar Anticline, East Lusitanian–Alcudian Zone, central Spain, lower La Grajera−Cañuelo unit, Ibor Group. B. MPZ 2007/3918, abraded tube fragment with imprints of mica crystals of the matrix. F. MPZ 2007/3919; F1, tube fragment with wall preserved; F2, detail of F1; F3, detail of F1, wall microstructure. G. MPZ 2007/3920, abraded tube fragment. H. MPZ 2007/3921; H1, tube fragment with wall preserved; H2, detail of H1 showing wall microstructure. Scale bars A, D, E, H1 100 µm; B, C, F2 300 µm; F1, G 1 mm; F3 50 µm; H2 30 µm.