Acutichiton

{{Short description|Extinct genus of molluscs}}

{{Automatic taxobox

| fossil_range = {{geo range|Lower Devonian| Carboniferous|ref={{Cite journal | last1 = Hoare | first1 = R. D. | last2 = Farrell | first2 = J. R. | doi = 10.1111/j.0031-0239.2004.00415.x | title = Lower Devonian Polyplacophora from New South Wales, Australia | journal = Palaeontology | volume = 47 | issue = 6 | pages = 1495 | year = 2004 | bibcode = 2004Palgy..47.1495H | doi-access = free }}}}

| authority = {{cite journal | last1 = Hoare | first1 = R.D. | last2 = Sturgeon | first2 = M.T. | last3 = Hoare | first3 = T.B. | year = 1972 | title = Middle Pennsylvanian (Allegheny Group) Polyplacophora from Ohio | journal = Journal of Paleontology | volume = 46 | issue = 5 | pages = 675–680 | jstor = 1303024 }}

| subdivision = {{Species list

| A. PYRMIDALUS | {{cite journal | last1 = Hoare | first1 = R.D. | last2 = Sturgeon | first2 = M.T. | last3 = Hoare | first3 = T.B. | year = 1972 | title = Middle Pennsylvanian (Allegheny Group) Polyplacophora from Ohio | journal = Journal of Paleontology | volume = 46 | issue = 5 | pages = 675–680 | jstor = 1303024 }}

| A. PANNUCEUS | {{cite journal | last1 = Hoare | first1 = R.D. | last2 = Mapes | first2 = R.H. | year = 1985 | title = A New Species of Pennsylvanian Polyplacophora (Mollusca) from Texas | journal = Journal of Paleontology | volume = 59 | issue = 5 | pages = 1324–1326 | jstor = 1305023 }}

| A. ALLYNSMITHI| HOARE, R. D., R. H. MAPES, AND D. E. ATWATER. 1983. Pennsylvanian

Polyplacophora (Mollusca) from Oklahoma and Texas. Journal of

Paleontology, 57:992-1000

| A. depressolatus | {{cite journal| last = Hoare|first= Richard D. | date =June 1999 | title = New Occurrences and a New Species of Pennsylvanian Polyplacophorans (Mollusca) in Ohio | journal = The Ohio Journal of Science | volume = 99 | issue = 3 | pages =49–52 | hdl = 1811/23819}}

| A. gracilis | {{cite journal|doi=10.1666/0022-3360(2002)076<0256:PPMFNU>2.0.CO;2|year=2002|volume=76|pages=256|title=Permian Polyplacophora (Mollusca) from Nevada, Utah, and Arizona|last1=Hoare|first1=R. D.|last2=Plas|first2=LEO P.|last3=Yancey|first3=T. E.|journal=Journal of Paleontology|issue=2|issn=0022-3360}}

| A. nevadensis | {{cite journal

| year = 2002

| doi = 10.1666/0022-3360(2002)076<0256:PPMFNU>2.0.CO;2

| issn = 0022-3360

| volume = 76

| pages = 256

| title = Permian Polyplacophora (Mollusca) from Nevada, Utah, and Arizona

| last1 = Hoare

| first1 = R. D.

| last2 = Plas

| first2 = LEO P.

| last3 = Yancey

| first3 = T. E.

| journal = Journal of Paleontology

| issue = 2}}

| A. etheridgei |{{Cite book|title=PALEOZOIC POLYPLACOPHORA: A CHECKLIST AND BIBLIOGRAPHY| issue=146|series=Occasional Papers of the California Academy of Sciences|date=Feb 25, 1987|first1=Allyn G. |last1=Smith|first2=Richard D.|last2=Hoare|url= https://archive.org/details/occasionalpapers146cali|issn=0068-5461|publisher=California Academy of Sciences|location=San Francisco|asin= B00070YQGM}}

}}

| taxon = Acutichiton

}}

Acutichiton is among the most primitive genera of Neoloricate chitons.{{Cite journal| last1 = Sigwart | first1 = J. D.| last2 = Sutton | first2= M. D.| title = Deep molluscan phylogeny: synthesis of palaeontological and neontological data| journal = Proceedings of the Royal Society B: Biological Sciences| issue = 1624| volume = 274| pages = 2413–2419| date =Oct 2007| pmid = 17652065| pmc = 2274978| doi = 10.1098/rspb.2007.0701}} For a summary, see {{cite web| title=The Mollusca | publisher=University of California Museum of Paleontology| url=http://www.ucmp.berkeley.edu/taxa/inverts/mollusca/mollusca.php| access-date=2 October 2008}} Acutichiton became extinct during the Carboniferous period.{{Fossil chiton catalogue}} Articulated specimens are known.{{cite journal | year = 1989 | title = Articulated Specimen of Acutichiton allynsmithi (Mollusca, Polyplacophora) from Oklahoma | journal = Journal of Paleontology | volume = 63 | issue = 2 | pages = 251 | doi = 10.1017/S0022336000019302| jstor = 1305363| last1 = Hoare | first1 = R. D | last2 = Mapes | first2 = R. H | bibcode = 1989JPal...63..251H | s2cid = 130857296 }}