Multiplacophora

{{Short description|Extinct order of molluscs}}

{{Automatic taxobox

| fossil_range = {{fossil range|Lower Cambrian|Permian}}

| taxon = Multiplacophora

| authority = Hoare and Mapes, 1995{{Cite journal|url=http://www.app.pan.pl/archive/published/app40/app40-111.pdf|year=1995|pages=111–128|title=Relationships of the Devonian Strobilepis and related Pennsylvanian problematica|first1=Richard D.|last1=Hoare|first2=Royal H.|last2=Mapes|journal= Acta Palaeontologica Polonica |volume=40|issue= 2}}

| subdivision_ranks = Families

| subdivision =

• Hercolepadidae
• Strobilepidae

}}

Multiplacophora is a stem-group of chitons with a number of plates arranged in 7 rows along the body.{{Cite journal | last1 = Vendrasco | first1 = M. J. | last2 = Wood | first2 = T. E. | last3 = Runnegar | first3 = B. N. | title = Articulated Palaeozoic fossil with 17 plates greatly expands disparity of early chitons | journal = Nature | volume = 429 | pages = 288–291 | year = 2004 | pmid = 15152250 | doi = 10.1038/nature02548|bibcode = 2004Natur.429..288V | issue=6989}} They date to at least the Upper Cambrian, but two lower Cambrian fossils- Ocruranus and Trachyplax - may extend the range downwards.{{Cite journal | last1 = Larsson | first1 = C. M. | last2 = Peel | first2 = J. S. | last3 = Högström | first3 = A. E. S. | doi = 10.4202/app.2009.0026 | title = Trachyplax arctica, a New Multiplated Problematic Fossil from the Lower Cambrian of North Greenland | journal = Acta Palaeontologica Polonica | volume = 54 | issue = 3 | pages = 513 | year = 2009 | doi-access = free }}