Multiplacophora

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]

Multiplacophora
Temporal range: Lower Cambrian–Permian
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Polyplacophora
Order: †Multiplacophora
Hoare and Mapes, 1995[1]
Families
  • Hercolepadidae
  • Strobilepidae

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

References
  1. Hoare, Richard D.; Mapes, Royal H. (1995). "Relationships of the Devonian Strobilepis and related Pennsylvanian problematica" (PDF). Acta Palaeontologica Polonica. 40 (2): 111–128.
  2. 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.
  3. 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.
  4. 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.
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