A bold claim about the origins of the echinoderms is based on newly discovered fossils from China. But many pieces are still missing from this part of the fragmented puzzle of life's evolutionary history.
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A. B. SMITH
References
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Smith, A. Echinoderm roots. Nature 430, 411–412 (2004). https://doi.org/10.1038/430411a
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DOI: https://doi.org/10.1038/430411a
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