Widdekind Posted March 2, 2011 Share Posted March 2, 2011 Trilobites, from c.525 Mya, look like 'derived forms' of Praecambridium sigillum & Skania, from c.40 Myr before. Indeed, the former looks like it had three armored lobes. If so, then 'proto-Arthropods' can be identified, in the Ediacaran period. Is this 'obviously false' ?? Fig. 1 -- Praecambridium sigillum Fig. 2 -- Skania fragilis Fig. 3 -- Trilobites Link to comment Share on other sites More sharing options...
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