Preservation of erniettomorph fossils in clay-rich siliciclastic deposits from the Ediacaran Wood Canyon Formation, Nevada

James Hall, Emmy Smith, Nobumichi Tamura, Sirine Fakra & Tanja Bosak
Three-dimensionally preserved Ediacaran fossils occur globally within sandstone beds. Sandy siliciclastic deposits of the Ediacaran Wood Canyon Formation (WCF) in the Montgomery Mountains, Nevada, contain two taphomorphs of erniettomorphs, soft-bodied organisms with uncertain taxonomic affinities. One taphomorph exhibits mm-scale ridges and a distinct lower boundary, the other is devoid of these diagnostic features but is similar in size and shape. We explore the cast-and-mould preservation of both taphomorphs by petrography, Raman spectroscopy, X-ray fluorescence microprobe,...
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