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
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