Multiplacophora

Multiplacophora; Temporal range: Lower Cambrian–Permian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Polyplacophora
Order:	†Multiplacophora; Hoare and Mapes, 1995
Families
	Hercolepadidae; Strobilepidae;

Multiplacophora is a stem-group of chitons with a number of plates arranged in 7 rows along the body.^[2] They date to at least the Upper Cambrian, but two lower Cambrian fossils- Ocruranus and Trachyplax - may extend the range downwards.^[3]

Families and genera

Family Hercolepadidae Dzik, 1986
- Genus Hercolepas Aurivillius, 1892
- Genus Protobalanus Hall and Clarke, 1888
Family Strobilepidae Hoare and Mapes, 1995^[1]
- Genus Aenigmatectus Hoare and Mapes, 1996
- Genus Deltaplax Puchalski, Johnson, Kauffman and Eernisse, 2009
- Genus Diadeloplax Hoare and Mapes, 1995^[1]
- Genus Hannestheronia Vinther, Jell, Kampouris, Carney, Racicot & Briggs, 2012^[4]
- Genus Polysacos Vendrasco, Wood and Runnegar, 2004^[2]
- Genus Strobilepis Clarke in Hall and Clarke, 1888

^ ^a ^b ^c Hoare, Richard D.; Mapes, Royal H. (1995). "Relationships of the Devonian Strobilepis and related Pennsylvanian problematica" (PDF). Acta Palaeontologica Polonica. 40 (2): 111–128.
^ ^a ^b Vendrasco, M. J.; Wood, T. E.; Runnegar, B. N. (2004). "Articulated Palaeozoic fossil with 17 plates greatly expands disparity of early chitons". Nature. 429 (6989): 288–291. Bibcode:2004Natur.429..288V. doi:10.1038/nature02548. PMID 15152250.
^ Larsson, C. M.; Peel, J. S.; Högström, A. E. S. (2009). "Trachyplax arctica, a New Multiplated Problematic Fossil from the Lower Cambrian of North Greenland". Acta Palaeontologica Polonica. 54 (3): 513. doi:10.4202/app.2009.0026.
^ VINTHER, JAKOB; JELL, PETER; KAMPOURIS, GEORGE; CARNEY, RYAN; RACICOT, RACHEL A.; BRIGGS, DEREK E. G. (2012). "The origin of multiplacophorans – convergent evolution in Aculiferan molluscs". Palaeontology. 55 (5): 1007–1019. doi:10.1111/j.1475-4983.2012.01180.x.