Articulated Paleozoic fossil with 17 plates greatly expands disparity of early chitons

M. J. Vendrasco, T. E. Wood, and B. N. Runnegar

2004

Article

Nature 429:288-290

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Taxa discussed in this work:

• Polysacos
• Polysacos vickersianum

Taxonomy:

• Polysacos belongs to Multiplacophora - Vendrasco et al. (2004)
• Polysacos vickersianum belongs to Polysacos - Vendrasco et al. (2004)
• Multiplacophora belongs to Polyplacophora - Vendrasco et al. (2004)