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Arthropod — Temporal range: 540–0 Ma … Wikipedia
Palaeophragmodictya — Taxobox fossil range=Late Ediacaran, Fossil range|558|555 regnum = Animalia genus= Palaeophragmodictya genus authority = GEhling Rigby 1996 species= P. reticulata Palaeophragmodictya is a Precambrian sponge grade organism.Originally interpreted… … Wikipedia