PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Neoloricata

Polyplacophora - Neoloricata

Taxonomy

Neoloricata was named by Bergenhayn (1955). It is extant.

It was assigned to Polyplacophora by Abbott (1974), Pacaud and Le Renard (1995), Beesley (1998), Sepkoski (2002), Zalvide et al. (2004) and Schwabe and Lozouet (2006).

Synonymy list

Year	Name and author
1955	Neoloricata Bergenhayn
1974	Neoloricata Abbott p. 392
1995	Neoloricata Pacaud and Le Renard p. 152
1998	Neoloricata Beesley p. 177
2002	Neoloricata Sepkoski
2004	Neoloricata Zalvide et al. p. 144
2006	Neoloricata Schwabe and Lozouet p. 618

Is something missing? Join the Paleobiology Database and enter the data

Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa

Rank	Name	Author
phylum	Mollusca
—	Serialia
class	Polyplacophora	de Blainville 1816
order	Neoloricata	Bergenhayn 1955
order	Neoloricata	Bergenhayn 1955

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Or. Neoloricata Bergenhayn 1955

show all | hide all

Subor. Acanthochitonina Bergenhayn 1930

Fm. Acanthochitonidae Pilsbry 1893

G. Acanthochitona Gray 1821 [glass-hair chiton]

†Acanthochitona avicula Carpenter 1864

†Acanthochitona crinita Pennant 1777

Acanthochitona fascicularis Linnaeus 1758

Invalid names: Acanthochitona communis Sabelli and Taviani 1979 [synonym]

Acanthochitona pygmaea Pilsbry 1893

Subfm. Acanthochitoninae Pilsbry 1893

G. Gymnoplax Gray 1821

G. †Bassethullia Pilsbry 1928

G. Craspedochiton Shuttleworth 1853

†Craspedochiton altavillensis Seguenza 1876

Invalid names: Chiton squamosus Libassi 1859 [synonym], Gymnoplax deslongchampsi Rochebrune 1883 [synonym]

†Craspedochiton eernissei Dell'Angelo et al. 2011

G. Cryptochiton Middendorff 1847

Cryptochiton stelleri Middendorf 1847

G. Cryptoconchus Burrow 1815

G. Cryptoplax Blainville 1818

†Cryptoplax menkrawitensis Beets 1941

G. †Leptoplax Carpenter 1882

G. Notoplax Adams 1861

Invalid names: Callistochitoninae Berry 1922 [empty]

G. †Afossochiton

G. †Austrochiton

G. †Beloplaxus

Fm. Chaetopleuridae Plate 1899

G. Calloplax Thiele 1909

Calloplax janeirensis Gray 1828

†Calloplax roederi Vendrasco et al. 2022

G. Chaetopleura Shuttleworth 1853

Subg. †Chaetopleura (Pallochiton) Dall 1879

Chaetopleura apiculata Say 1830

†Chaetopleura gemma Carpenter 1879

Chaetopleura peruvianus Lamarck 1819

G. Dinoplax Dall 1882

Dinoplax gigas Gmelin 1791

Subor. Chitonina Thiele 1910

Fm. †Ischnochitonidae Dall 1889

G. †Allochiton

†Allochiton altus Fucini 1912

†Allochiton costulatus Fucini 1912

†Allochiton gemmellaroi Fucini 1912

Subfm. †Callochitoninae

G. Callochiton Gray 1847

†Callochiton crocinus

†Callochiton elongatus

†Callochiton klemi

†Callochiton mayi

†Callochiton rufus

†Callochiton septemvalvis Montagu 1803

G. Eudoxochiton Shuttleworth 1853

Subg. †Eudoxochiton (Eudoxoplax) Iredale 1916

†Eudoxochiton inornatus

Subfm. †Chaetopleurinae

G. †Nuttallochiton Plate 1899

G. Cyanoplax Pilsbry 1892

†Cyanoplax dentiens Gould 1846

†Cyanoplax hartwegii Carpenter 1855

Cyanoplax keepiana Berry 1948 [keep's chiton]

G. †Heterochiton

†Heterochiton buccai Fucini 1912

†Heterochiton compressus Scalia 1903

†Heterochiton giganteus Scalia 1903

†Heterochiton vinassai Fucini 1912

†Heterochiton zitteli Scalia 1903

Subfm. †Ischnochitoninae

G. Ischnochiton Gray 1847

Subg. †Ischnochiton (Haploplax) Pilsbry 1894

Subg. †Ischnochiton (Heterozona) Carpenter 1879

Subg. †Ischnochiton (Ischnochiton) Gray 1847

Subg. Ischnochiton (Rhombochiton) Berry 1919

Subg. †Ischnochiton (Simplischnochiton) Van Belle 1974

Subg. †Ischnochiton (Stenosemus) Middendorff 1847

†Ischnochiton anserinus Laghi 1977

Invalid names: Ischnochiton (Simplischnochiton) anserinus Laghi 1977 [synonym]

†Ischnochiton goederti Dell'Angelo et al. 2011

†Ischnochiton marloffsteinensis Fiedel and Keupp 1988

†Ischnochiton martinelli Angelo et al. 2004

Ischnochiton pectinatus Sowerby 1840

†Ischnochiton rissoi Payraudeau 1826

Invalid names: Ischnochiton (Ischnochiton) rissoi Angelo and Smriglio 1999 [synonym], Ischnochiton (Simplischnochiton) rissoi Angelo 1999 [synonym]

G. †Stenochiton Adams 1864

Subfm. †Lepidochitoninae

G. Lepidochitona Gray 1821

Subg. †Lepidochitona (Lepidochitona) Gray 1821

†Lepidochitona caprearum Scacchi 1836

Invalid names: Lepidochitona (Lepidochitona) caprearum Koskeridou 2009 [synonym], Middendorfia caprearum Laghi 1977 [synonym]

†Lepidochitona gantensis Dell'Angelo et al. 2014

Lepidochitona lowei Pilsbry 1918

Invalid names: Cyanoplax fackenthallae Berry 1919 [synonym]

†Lepidochitona squiresi Dell'Angelo et al. 2011

†Lepidochitona szoetsi Dell'Angelo et al. 2014

†Lepidochitona viciani Dell'Angelo et al. 2014

†Lepidochitona washingtonensis Dell'Angelo et al. 2011

G. †Particulazona Kaas 1993

G. †Subterenochiton Iredale 1924

G. Lepidozona Pilsbry 1892

†Ischnochiton (Lepidozona) pectinatus Carpenter 1864

Ischnochiton (Lepidozona) pectinulatus Carpenter 1893

†Lepidozona cooperi Carpenter 1879

†Lepidozona cowlitzensis Dell'Angelo et al. 2011

†Lepidozona mertensii Middendorff 1846

Lepidozona sanctaemonicae Berry 1922

Lepidozona scrobiculata Middendorff 1847

Invalid names: Ischnochiton (Lepidozona) sinudentatus Carpenter 1892 [synonym]

Subfm. †Schizoplacinae

G. †Schizoplax

†Schizoplax brandtii

G. Stenoplax Carpenter 1879

†Ischnochiton (Stenoplax) conspicua Carpenter 1879 [conspicuous chiton]

Subg. Stenoplax (Stenoradsia) Carpenter 1879

†Stenoplax conspicua Carpenter 1879 [conspicuous chiton]

†Stenoplax fallax Carpenter 1892

Stenoplax heathiana Berry 1946

Stenoplax magdalenensis Hinds 1845 [magdalena chiton]

Invalid names: Ischnochiton (Stenoplax) acrior Carpenter 1892 [synonym], Ischnochiton acrior Carpenter 1892 [synonym]

†Stenoplax quimperensis Dell'Angelo et al. 2011

G. †Stenosemus Middendorff 1847

†Stenosemus dolii Van Belle and Angelo 1998

Invalid names: Ischnochiton (Simplischnochiton) exaratus Angelo 1999 [synonym], Ischnochiton (Stenosemus) dolii Angelo and Smriglio 1999 [synonym], Ischnochiton exaratus Angelo and Giusti 1997 [synonym], Ischnochiton vanbellei Smriglio 1989 [synonym], Lepidozona dorsuosa Laghi 1977 [synonym]

G. Tonicella Carpenter 1873

Tonicella lineata Wood 1815 [lined red chiton]

Tonicella marmorea Fabrius 1780

G. Tripoplax Berry 1919

†Tripoplax regularis Carpenter 1855

Tripoplax trifida Carpenter 1864

G. †Crenatolorica

Subor. †Cymatochitonina Sirenko and Starobogatov 1977

Fm. †Cymatochitonidae Sirenko and Starobogatov 1977

G. †Cymatochiton Dall 1882

†Cymatochiton kaibabensis Brady 1955

†Cymatochiton loftusianus King 1848

†Cymatochiton texanus Girty 1908

Fm. †Gryphochitonidae Pilsbury 1900

G. †Aaptochiton Hoare and Karasawa 2008

†Aaptochiton pustulosus Hoare and Karasawa 2008

G. †Chauliochiton Hoare and Smith 1984

†Chauliochiton knighti Hoare and Smith 1984

G. †Chonechiton Carpenter 1882

†Chonechiton viseticola de Ryckholt 1845

G. †Gryphochiton Gray 1847

†Gryphochiton asamiae Hoare and Karasawa 2008

†Gryphochiton distinctus Hoare et al. 2002

†Gryphochiton girtyi Hoare and Smith 1984

†Gryphochiton planoplata Hanger et al. 2000

G. †Elachychiton

G. †Eulachychiton

G. †Euleptochiton

G. Guildingia

Subor. Ischnochitonina Bergenhayn 1930

Fm. Mopaliidae Dall 1889

G. Amicula Gray 1847

G. Katharina Gray 1847

†Katharina tunicata Wood 1815

G. Mopalia Gray 1847

Subg. Mopalia (Dendrochiton) Berry 1911

†Mopalia acuta Carpenter 1855

†Mopalia ciliata Sowerby 1840

†Mopalia hindsii Sowerby 1847

Mopalia imporcata Carpenter 1864

†Mopalia lignosa Gould 1846

Mopalia lowei Pilsbry 1918

†Mopalia muscosa Gould 1846

†Mopalia sinuata Carpenter 1864

G. Placiphorella Carpenter 1879

†Placiphorella velata Carpenter 1879

G. Plaxiphora Gray 1847

Invalid names: Heterochitoninae [empty], Katharininae [empty], Mopaliinae [empty]

G. †Pterygochiton

†Pterygochiton busambrensis Scalia 1903

†Pterygochiton distefanoi Fucini 1912

†Pterygochiton liasinus Eudes-Deslongchamps 1864

†Pterygochiton mirificus Fucini 1912

†Pterygochiton terquemii Eudes-Deslongchamps 1859

Fm. Schizochitonidae Dall 1885

G. †Aulacochiton Shuttleworth

†Aulacochiton praecursor Smith et al. 1968

G. Lorica Adams and A. 1852

G. Loricella Pilsbry 1893

Loricella angasi Adams 1864

G. †Oochiton

G. Schizochiton Gray 1847

Schizochiton incisus Sowerby 1841

†Schizochiton incisus goikulensis Ladd 1966

†Schizochiton marshallensis Ladd 1966

G. †Kindbladochiton

G. Laculina

G. †Lavenachiton

Subor. †Lepidopleurina Thiele 1910

Fm. †Acutichitonidae Hoare et al. 1983

G. †Acutichiton Hoare et al. 1972

†Acutichiton gracilis Hoare et al. 2002

†Acutichiton nevadensis Hoare et al. 2002

†Acutichiton pannuceus Hoare and Mapes 1985

†Acutichiton pyrmidalus Hoare et al. 1972

G. †Arcochiton Hoare and Sturgeon 1976

†Arcochiton raymondi Hoare and Sturgeon 1976

†Arcochiton richardsoni Hoare et al. 2002

†Arcochiton soccus Hanger et al. 2000

G. †Kraterochiton Hoare 2000

†Kraterochiton magnificus Hoare 2000

G. †Soleachiton Hoare and Smith 1984

†Soleachiton yochelsoni Hoare and Smith 1984

Fm. †Choriplacidae

G. †Choriplax Pilsbry 1894

†Coriplax grayi

G. †Plasiochiton Hoare 2000

†Plasiochiton curiosus Hoare 2000

Fm. †Crassitudochitonidae Hoare and Karasawa 2008

G. †Crassitudochiton Hoare and Karasawa 2008

†Crassitudochiton plakos Hoare and Karasawa 2008

Fm. †Glyptochitonidae Starobogatov and Sirenko 1975

G. †Glyptochiton de Koninck 1883

†Glyptochiton cordifer de Koninck 1844

Fm. Hanleyidae Bergenhayn 1955

G. Hanleya Gray 1857

†Hanleya hanleyi Bean 1844

G. †Hemiarthrum Carpenter 1876

G. †Homeochiton Hanger et al. 2000

†Homeochiton triangulus Hanger et al. 2000

Fm. †Lepidopleuridae Pilsbry 1892

G. †Asketochiton Hoare and Sabattini 2000

†Asketochiton chubutensis Hoare and Sabattini 2000

G. †Camptochiton Debrock et al. 1984

G. †Colapterochiton Hoare and Mapes 1985

†Colapterochiton decorus Hoare and Mapes 1985

G. †Coryssochiton Debrock et al. 1984

G. †Glaphurochiton Raymond 1910

†Glaphurochiton carbonarius Stevens 1858

Invalid names: Helminthochiton concinnus Richardson 1956 [synonym]

G. †Hadrochiton Hoare 2000

†Hadrochiton pileus Hoare 2000

G. †Hanleyella

G. †Lekiskochiton Hoare and Smith 1984

†Lekiskochiton fornicis Hoare and Smith 1984

G. †Lobarochiton Hoare 1976

G. Oldroydia Dall 1894

G. †Pedanochiton Debrock et al. 1984

G. †Pileochiton Debrock et al. 1984

G. †Schematochiton Hoare 2002

†Schematochiton arthurcooperi Smith 1976

G. †Stegochiton Hoare and Smith 1984

†Stegochiton coxi Hoare and Smith 1984

†Stegochiton onerosus Hoare and Smith 1984

Fm. Leptochitonidae Dall 1889

G. †Gifuchiton Hoare and Karasawa 2008

†Gifuchiton pentagonus Hoare and Karasawa 2008

G. Leptochiton Gray 1847

Subg. Leptochiton (Leptochiton) Gray 1847

Leptochiton (Leptochiton) pepezamorai Zalvide et al. 2004

Leptochiton (Leptochiton) troncosoi Zalvide et al. 2004

Subg. †Leptochiton (Parachiton) Thiele 1909

†Leptochiton algesirensis Capellini 1859

Invalid names: Lepidopleurus (Leptochiton) algesirensis Angelo and Palazzi 1989 [synonym]

†Leptochiton cancellatus Sowerby 1840

†Leptochiton clarki Berry 1922

†Leptochiton terryiverseni Hybertsen and Kiel 2018

Subfm. Leptochitoninae Dall 1889

G. Lepidopleurus Gray 1847

Subg. †Lepidopleurus (Leptochiton) Gray 1847

Lepidopleurus nexus Carpenter 1864

Invalid names: Lepidochiton Gray 1847 [synonym], Rhombichiton Dekoninck 1883 [synonym]

G. †Pterochiton Carpenter 1882

†Pterochiton eburonicus de Ryckholt 1845

†Pterochiton newelli Smith 1976

†Pterochiton spatulatus Hoare et al. 1972

Fm. †Ochmazochitonidae Hoare and Smith 1984

G. †Ochmazochiton Hoare and Smith 1984

†Ochmazochiton comptus Hoare and Smith 1984

G. †Pyknochiton Hoare 2000

†Pyknochiton lunatus Hoare 2000

G. Lirachiton

G. †Llandeilochiton

G. †Loboarochiton Hoare 1976

G. †Mesochiton

G. †Permochiton

G. †Proleptochiton

†Proleptochiton laterodepressus Bergenhayn 1945

G. †Protalochiton

G. †Protochiton

G. †Pseudoischnochiton

G. †Trachypleura

Invalid names: Abyssochitonidae [empty], Cryptoplacidae [empty], Xylochitonidae Gowlett-Holmes and A.M. 1992 [empty]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

aragonitec

Environment:

marine, brackishc

Locomotion:

facultatively mobilec

Attached:

yesc

Life habit:

epifaunalc

Diet:

grazerc

Vision:

limitedc

Created:

2007-09-07 09:30:10

Modified:

2010-02-15 05:49:47

Source: c = class

Reference: Kiessling 2003

Age range

Maximum range based only on fossils: base of the Ludlow to the top of the Holocene or 427.40000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 423.0 Ma

Collections (190 total)

Time interval	Ma	Country or state	Original ID and collection number
Ludlow	427.4 - 423.0	USA (California)	Gryphochitonidae indet. (229624)
Givetian	387.7 - 382.7	USA (Pennsylvania)	Plasiochiton curiosus (50947)
Chadian	346.7 - 340.0	Czech Republic	Lepidopleurus laterodepressus (38086 38088 38090)
Meramecian	343.0 - 335.5	Canada (Alberta)	Chiton carbonarius (62396)
Morrowan	323.2 - 318.6	USA (Oklahoma)	Colapterochiton decorus (79329)
Moscovian	315.2 - 307.0	USA (Texas)	Colapterochiton decorus (79328)
Kashirian - Myachkovian	313.8 - 307.0	USA (Texas)	Camptochiton squarrosus, Coryssochiton parallelus, Pedanochiton discomptus, Pileochiton cancellus, Arcochiton raymondi, Acutichiton pyrmidalus, Pterochiton spatulatus (41873)
Desmoinesian	312.8 - 306.0	USA (Oklahoma)	Glaphurochiton sp. (91530)
Desmoinesian	312.8 - 306.0	USA (Ohio)	Arcochiton raymondi, Acutichiton pyrmidalus, Pterochiton spatulatus, Pterochiton carbonarius (71963) Pterochiton carbonarius (72004 79324 79327)
Desmoinesian - Gzhelian	312.8 - 298.9	USA (Illinois)	Chiton carbonarius (128873)
Missourian	306.0 - 303.7	USA (Pennsylvania)	Glaphurochiton carbonarius (233315)
Gzhelian	303.7 - 298.9	Russian Federation	Pterochiton kliazmensis (51474)
Virgilian	303.7 - 298.9	USA (Texas)	Acutichiton pannuceus (49693)
Asselian	298.9 - 295.5	USA (Texas)	Pterochiton arthurcooperi (43482)
Wolfcampian - Leonardian	298.9 - 273.01	USA (Oregon)	Chauliochiton sp., Pterochiton sp., Homeochiton triangularis, Gryphochiton planoplata, Arcochiton soccus (7141)
Permian	298.9 - 251.902	Argentina (Chubut)	Asketochiton chubutensis (7142)
Artinskian	290.1 - 279.3	USA (Nevada)	Acutichiton gracilis (97271) Arcochiton richardsoni (52899) Glaphurochiton sp. (89333) Gryphochiton distinctus, Acutichiton nevadensis, Arcochiton richardsoni (39157)
Artinskian	290.1 - 279.3	USA (Texas)	Stegochiton coxi (75936)
Artinskian - Kungurian	290.1 - 272.3	USA (Texas)	Pterochiton arthurcooperi (105972)
Kungurian	279.3 - 272.3	USA (Nevada)	Arcochiton richardsoni (10640)
Kungurian	279.3 - 272.3	Malaysia (Parak)	Kraterochiton magnificus, Hadrochiton pileus, Pyknochiton lunatus (8524)
Kungurian	279.3 - 272.3	USA (Arizona)	Arcochiton richardsoni (52898)
Kungurian	279.3 - 272.3	USA (Texas)	Ochmazochiton comptus (75863) Pterochiton arthurcooperi (43517 43562 43566 75923 81711 105931) Pterochiton arthurcooperi, Lekiskochiton fornicis (105940) Pterochiton arthurcooperi, Ochmazochiton comptus (101785) Pterochiton arthurcooperi, Ochmazochiton comptus, Soleachiton yochelsoni, Chauliochiton knighti, Stegochiton coxi (101806) Pterochiton arthurcooperi, Soleachiton yochelsoni (43491 43513 43516) Soleachiton yochelsoni (43514) Stegochiton onerosus (109697)
Roadian	272.3 - 268.8	USA (Texas)	Lepidopleurina sp. B, Lepidopleurina sp. C, Pterochiton arthurcooperi, Ochmazochiton comptus, Chauliochiton knighti (101783) Pterochiton arthurcooperi (43512 43548 43551 43563 101767 101781 101782 101805 101808 102604 102610 102611 105932) Pterochiton arthurcooperi, Chauliochiton knighti (43598 102615) Pterochiton newelli, Helminthochiton girtyi, Lekiskochiton fornicis, Chauliochiton knighti (101807)
Roadian	272.3 - 268.8	USA (Arizona)	Rhynchoteuthis kaibabensis (113094)
Roadian - Capitanian	272.3 - 259.51	USA (Texas)	Cymatochiton texanus (108835)
Wordian	266.9 - 264.28	USA (Texas)	Pterochiton arthurcooperi (43550 101867)
Capitanian	264.28 - 259.51	Japan	Gryphochiton asamiae, Aaptochiton pustulosus, Gifuchiton pentagonus, Crassitudochiton plakos (109667)
Wuchiapingian	259.9 - 254.17	United Kingdom (England)	Chiton loftusianus (130765)
Wuchiapingian	259.9 - 254.17	United Kingdom	Chiton sp. (130870 130871 130872)
Early/Lower Jurassic	201.4 - 174.7	France	Pterygochiton liasinus, Pterygochiton terquemii (91222)
Sinemurian	199.3 - 190.8	Italy	Allochiton altus, Heterochiton buccai, Pterygochiton busambrensis, Allochiton costulatus, Heterochiton compressus, Pterygochiton distefanoi, Allochiton gemmellaroi, Heterochiton giganteus, Heterochiton zitteli, Pterygochiton mirificus, Heterochiton vinassai (91197)
Margaritatus	189.6 - 183.0	Germany	Ischnochiton marloffsteinensis (139314)
Early/Lower Maastrichtian	70.6 - 66.0	Puerto Rico	Aulacochiton praecursor (66738)
Ypresian	56.0 - 47.8	USA (Washington)	Lepidochitona squiresi (176361)
Waipawan	55.8 - 53.0	New Zealand	Leptochiton sp. (51084)
Lutetian	47.8 - 41.3	USA (Washington)	Leptochiton terryiverseni (198636)
Lutetian	47.8 - 41.3	United Kingdom (England)	Stenoplax anglica (8124)
Lutetian - Bartonian	47.8 - 38.0	Hungary	Lepidochitona szoetsi, Lepidochitona gantensis, Lepidochitona viciani (172909)
Bartonian - Chattian	41.3 - 23.03	USA (Washington)	Stenoplax sp. A (62246)
Priabonian	38.0 - 33.9	USA (Washington)	Ischnochiton sp. A, Stenoplax sp. A, Stenoplax sp. B (40733) Stenoplax quimperensis (91606)
Priabonian	38.0 - 33.9	Ukraine	Lepidopleurus elaboratus, Lepidopleurus scirpeus, Lepidopleurus pustuliferus, Lepidopleurus papillosus (7295)
Priabonian - Rupelian	38.0 - 28.1	USA (Washington)	Ischnochiton sp. B, Lepidochitona lioplax, Lepidochitona sp., Lepidopleurus propecajetanus, Leptochiton sp., Ischnochiton goederti, Craspedochiton eernissei (180196) Lepidochitona washingtonensis (180194)
Rupelian	33.9 - 28.1	Germany	Lepidopleurus sp. (95898)
Aquitanian - Burdigalian	23.03 - 15.97	Australia (Victoria)	Protochiton granulosus (74769)
Early/Lower Miocene	23.03 - 15.97	USA (New Jersey)	Chaetopleura apiculata (59335 59722)
Early/Lower Miocene	23.03 - 15.97	Marshall Islands	Cryptoplax sp. A (78032 78033) Schizochiton marshallensis (43315)
Burdigalian	20.44 - 15.97	Germany	Lepidopleurus sp. (111599)
Burdigalian - Langhian	20.44 - 13.82	Belgium	Hanleya multigranosa (114830)
Altonian	19.0 - 15.9	New Zealand	Lepidopleurus inquinatus (67899)
Langhian	15.97 - 13.82	Japan	Lepidozona sp. (44958)
Middle Miocene	15.97 - 11.608	Marshall Islands	Schizochiton marshallensis (78023)
Sarmatian	12.7 - 11.608	Slovakia	Acanthochitona sp., Cryptoplax sp. (145974)
Late/Upper Miocene	11.608 - 5.333	Palau	Schizochiton incisus (77930)
Late/Upper Miocene	11.608 - 5.333	Marshall Islands	Acanthochitona sp. (78025) Acanthochitona sp., Cryptoplax sp. A (77976) Cryptoplax sp. B, Schizochiton marshallensis (77977) Schizochiton marshallensis (77975 77984 77985 78022)
Late/Upper Miocene	11.608 - 5.333	Australia (South Australia)	Cryptoplax ludbrookae (63436)
Messinian	7.246 - 5.333	Fiji	Cryptoplax sp., Cryptoplax menkrawitensis (78060)
Messinian	7.246 - 5.333	USA (California)	Chaetopleura lanuginosa, Calloplax roederi (227380)
Early/Lower Pliocene	5.333 - 3.6	Marshall Islands	Acanthochitona sp. (43320)
Pliocene	5.333 - 2.588	USA (California)	Cryptochiton stelleri (207044) Ischnochiton conspicuus (120820) Katharina tunicata (138824)
Late/Upper Pliocene	3.6 - 2.588	Italy	Acanthochitona fascicularis, Leptochiton cancellatus, Ischnochiton rissoi, Ischnochiton anserinus, Ischnochiton martinelli, Stenosemus dolii, Callochiton septemvalvis, Craspedochiton altavillensis (175549) Acanthochitona fascicularis, Leptochiton cancellatus, Ischnochiton rissoi, Ischnochiton anserinus, Ischnochiton martinelli, Stenosemus dolii, Callochiton septemvalvis, Lepidochitona caprearum, Acanthochitona crinita, Craspedochiton altavillensis (175552) Acanthochitona fascicularis, Stenosemus dolii, Craspedochiton altavillensis (175548) Craspedochiton altavillensis (175550) Leptochiton sp., Leptochiton cancellatus, Leptochiton algesirensis, Hanleya hanleyi, Ischnochiton anserinus, Stenosemus dolii, Craspedochiton altavillensis (175395) Stenosemus dolii, Craspedochiton altavillensis (175551)
Late/Upper Pliocene	3.6 - 2.588	South Africa (Western Cape)	Chaetopleura pertusa, Dinoplax sp. (118257)
Early/Lower Pleistocene	2.588 - 0.781	USA (California)	Chaetopleura gemma, Stenoplax heathiana (202495) Ischnochiton magdalenensis (187025) Mopalia sp., Chaetopleura gemma, Stenoplax heathiana (202496)
Early/Lower Pleistocene	2.588 - 0.781	USA (North Carolina)	Chaetopleura sp. (60986 60987 60988 60989)
Early/Lower Pleistocene - Late/Upper Pleistocene	2.588 - 0.0117	Italy (Livorno)	Lepidopleurus cajetanus, Acanthochitona fascicularis (173663)
Pleistocene	2.588 - 0.0117	USA (California)	Chaetopleura gemmea, Ischnochiton radians, Ischnochiton decipiens, Oldroydia percrassa, Mopalia muscosa, Placiphorella velata, Ischnochiton magdalenensis, Mopalia lignosa, Mopalia ciliata (201624) Cryptochiton stelleri (207043) Cryptochiton stelleri, Ischnochiton conspicuus, Mopalia muscosa, Ischnochiton acrior (139843) Cryptochiton stelleri, Ischnochiton conspicuus, Mopalia muscosa, Mopalia hindsii, Mopalia sinuata, Placiphorella velata, Ischnochiton fallax, Ischnochiton magdalenensis, Ischnochiton acrior, Ischnochiton cooperi, Ischnochiton mertensii, Ischnochiton sinudentatus, Mopalia lignosa, Mopalia ciliata, Katharina tunicata, Mopalia acuta (138719) Mopalia acuta (138720)
Pleistocene	2.588 - 0.0117	Mexico (Baja California)	Lepidozona pectinulatus, Tonicella lineata, Stenoplax acrior, Stenoplax conspicuus, Mopalia muscosa (96590) Mopalia hindsi, Cryptochiton stelleri (96594) Stenoplax acrior, Mopalia muscosa (96592) Tonicella lineata, Mopalia muscosa (96593)
Pleistocene	2.588 - 0.0117	South Africa	Chiton gigas (101549)
Pleistocene - Holocene	2.588 - 0.0	USA (California)	Ischnochiton conspicuus, Ischnochiton pectinulatus (138721) Ischnochiton conspicuus, Ischnochiton sanctaemonicae, Ischnochiton pectinulatus, Leptochiton clarki, Acanthochitona avicula, Ischnochiton acrior, Mopalia acuta (138821)
Quaternary	2.58 - 0.0	USA (California)	Cryptochiton stelleri (37943 37946) Cryptochiton stelleri, Mopalia muscosa (37939) Cryptochiton stelleri, Tonicella lineata, Mopalia muscosa (37937) Lepidozona sp., Lepidozona californiensis, Stenoplax sp., Dendrochiton thamnopora, Cryptochiton stelleri, Tonicella lineata, Stenoplax conspicuus, Mopalia muscosa, Placiphorella velata, Mopalia ciliata, Cyanoplax dentiens (37933) Mopalia muscosa (37944 37945 37948) Mopalia muscosa, Mopalia hindsii (37936) Stenoplax conspicuus, Mopalia muscosa (37940) Stenoplax sp., Mopalia muscova, Tonicella lineata, Mopalia hindsii (37947)
Castlecliffian	1.63 - 0.34	New Zealand	Cryptoconchus mucronatus (178191)
Middle Pleistocene	0.774 - 0.129	USA (Florida)	Ischnochiton sp., Chaetopleura apiculata, Acanthochitona pygmaea (61310)
Middle Pleistocene	0.774 - 0.129	USA (California)	Cryptochiton stelleri (222663 222665) Katharina tunicata (223326) Mopalia imporcata, Ischnochiton trifidus (200409 223325) Mopalia mucosa, Cryptochiton stelleri, Lepidochitona dentiens, Mopalia muscosa, Ischnochiton fallax, Ischnochiton regularis, Ischnochiton cooperi, Mopalia acuta (138723) Stenoplax magdalenensis, Lepidochitona keepiana (202493) Stenoplax magdalenensis, Lepidochitona keepiana, Mopalia muscosa, Placiphorella velata, Chaetopleura gemma, Mopalia ciliata (202492) Stenoplax magdalenensis, Mopalia muscosa, Chaetopleura gemma, Mopalia lowei (202494)
Late/Upper Pleistocene (interglacial)	0.129 - 0.0117	Mexico (Baja California)	Lepidozona sp. (89573)
Late/Upper Pleistocene	0.129 - 0.0117	Mexico (Baja California)	Lepidozona pectinulatus, Mopalia muscosa, Mopalia ciliata (96591)
Late/Upper Pleistocene	0.129 - 0.0117	USA (Alaska)	Tonicella marmorea (37632)
Late/Upper Pleistocene	0.129 - 0.0117	USA (California)	Cryptochiton stelleri, Tonicella lineata, Cyanoplax hartwegii, Cyanoplax fackenthallae, Mopalia muscosa, Placiphorella velata, Chaetopleura gemma, Ischnochiton magdalenensis, Ischnochiton cooperi, Mopalia lignosa, Mopalia ciliata (207041) Ischnochiton acrior, Cyanoplax hartwegii, Ischnochiton magdalenensis (219030) Ischnochiton acrior, Ischnochiton conspicuus, Ischnochiton sanctaemonicae, Ischnochiton pectinulatus, Mopalia acuta (96566) Ischnochiton acrior, Mopalia muscosa, Ischnochiton magdalenensis, Lepidopleurus nexus (219029) Ischnochiton regularis (222674) Ischnochiton regularis, Mopalia ciliata (222660) Ischnochiton sanctaemonicae, Mopalia acuta, Lepidopleurus nexus (59063) Lepidochitona keepiana (96589) Lepidozona brunnea, Ischnochiton acrior, Ischnochiton conspicuus, Lepidochitona keepiana, Cyanoplax hartwegii, Mopalia muscosa, Acanthochitona avicula, Ischnochiton magdalenensis, Mopalia acuta (160361) Mopalia ciliata (37673) Mopalia lignosa (37672) Mopalia muscosa, Stenoplax heathiana, Mopalia wossnessenski (202491) Mopalia sp. (96900 96901) Mopalia sp., Mopalia muscosa, Ischnochiton cooperi (222968) Stenoplax sp., Mopalia muscosa, Mopalia ciliata, Stenoplax heathiana, Mopalia wossnessenski (202490) Tonicella lineata, Mopalia muscosa, Placiphorella velata, Ischnochiton magdalenensis, Ischnochiton cooperi, Mopalia lignosa, Mopalia ciliata (202936) Tonicella lineata, Placiphorella velata, Ischnochiton magdalenensis, Ischnochiton cooperi, Mopalia lignosa, Mopalia ciliata (222973)
Late/Upper Pleistocene	0.129 - 0.0117	Mexico	Cryptochiton stelleri (67613 67641) Cryptochiton stelleri, Tonicella lineata, Mopalia muscosa, Mopalia lignosa, Stenoplax heathiana, Lepidozona cooperi (52347)
Holocene	0.0117 - 0.0	Marshall Islands	Loricella sp. A (43306 43334)
Holocene	0.0117 - 0.0	USA (California)	Mopalia muscosa, Katharina tunicata (207042)