Supplemental dataset 1 for: Ediacaran palaeobiology and biostratigraphy of the Nama Group, Namibia, with emphasis on the erniettomorphs, tubular and trace fossils, and a new sponge, Arimasia germsi gen. et sp. nov.

Ediacaran fossils, obtained in stratigraphic context in 1993, 1995 and 1996, with the assistance of A. Seilacher, IGCP project 320 scientists and the Geological Survey of Namibia, are described for the first time. Most are from the Kliphoek and Buchholzbrunn members of the Dabis Formation and the Huns and Spitskop members of the Urusis Formation, Witputs subbasin, but a significant number, including Pteridinium, are from the Kliphoek Member, Zaris Formation and the Neiderhagen Member, Nudaus Formation north of the Osis arch, which separates the two subbasins. We extend the stratigraphic ranges and geographic distributions of several important taxa, including Archaeichnium, Ernietta, Pteridinium and Swartpuntia, provide reassessments of the paleobiology of these and other organisms, and describe a new sponge—possibly an unmineralized archaeocyath—Arimasia germsi gen. et sp. nov. We also describe and illustrate various ichnofossils, including the oldest known traces from the Nama Group, n...