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Long Expected Sponges from the Neoproterozoic Ediacara Fauna of South Australia
James G. Gehling and J. Keith Rigby
Journal of Paleontology
Vol. 70, No. 2 (Mar., 1996), pp. 185-195
Published by: Paleontological Society
Stable URL: http://www.jstor.org/stable/1306383
Page Count: 11
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New fossils from the Neoproterozoic Ediacara fauna of South Australia are interpreted as the oldest known hexactinellid sponges. They occur within the Ediacara Member of the Rawnsley Quartzite (Pound Subgroup) from several locations in the Flinders Ranges. The new genus, Palaeophragmodictya, is characterized by disc-shaped impressions preserving characteristic spicular networks and is reconstructed as a convex sponge with a peripheral frill and an oscular disc at the apex.
Journal of Paleontology © 1996 Paleontological Society