Multiplacophora

Multiplacophora is a stem-group of chitons with a number of plates arranged in 7 rows along the body. They date to at least the Upper Cambrian, but two lower Cambrian fossils- Ocruranus and Trachyplax - may extend the range downwards.

Families and genera

 * Family Hercolepadidae Dzik, 1986
 * Genus Hercolepas Aurivillius, 1892
 * Genus Protobalanus Hall and Clarke, 1888
 * Family Strobilepidae Hoare and Mapes, 1995
 * Genus Aenigmatectus Hoare and Mapes, 1996
 * Genus Deltaplax Puchalski, Johnson, Kauffman and Eernisse, 2009
 * Genus Diadeloplax Hoare and Mapes, 1995
 * Genus Hannestheronia Vinther, Jell, Kampouris, Carney, Racicot & Briggs, 2012
 * Genus Polysacos Vendrasco, Wood and Runnegar, 2004
 * Genus Strobilepis Clarke in Hall and Clarke, 1888