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Ischnochitonidae
Taxonomy
Ischnochitonidae was named by Dall (1889) [m. kosnik taxon no: 7255].
It was assigned to Mesoplacophora by Martin (1904); to Ischnochitonina by Smith (1973), Abbott (1974); to Chitonina by Pacaud and Le Renard (1995); to Neoloricata by Beesley (1998); and to Acanthochitonina by Wu and Lee (2024).
It was assigned to Mesoplacophora by Martin (1904); to Ischnochitonina by Smith (1973), Abbott (1974); to Chitonina by Pacaud and Le Renard (1995); to Neoloricata by Beesley (1998); and to Acanthochitonina by Wu and Lee (2024).
Synonymy list
| Year | Name and author |
|---|---|
| 1889 | Ischnochitonidae Dall |
| 1904 | Ischnochitonidae Martin p. 270 |
| 1973 | Ischnochitonidae Smith p. 7 |
| 1974 | Ischnochitonidae Abbott p. 394 |
| 1995 | Ischnochitonidae Pacaud and Le Renard p. 152 |
| 1998 | Ischnochitonidae Beesley p. 177 |
| 2024 | Ischnochitonidae Wu and Lee |
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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.
Fm. †Ischnochitonidae Dall 1889
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G. †Allochiton
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†Allochiton altus Fucini 1912
†Allochiton costulatus Fucini 1912
†Allochiton gemmellaroi Fucini 1912
Subfm. †Callochitoninae
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G. Cyanoplax Pilsbry 1892
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†Cyanoplax dentiens Gould 1846
†Cyanoplax hartwegii Carpenter 1855 [Hartweg's chiton]
Cyanoplax keepiana Berry 1948 [keep's chiton]
G. †Heterochiton
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†Heterochiton buccai Fucini 1912
†Heterochiton compressus Scalia 1903
†Heterochiton giganteus Scalia 1903
†Heterochiton vinassai Fucini 1912
†Heterochiton zitteli Scalia 1903
Subfm. †Ischnochitoninae
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G. Ischnochiton Gray 1847
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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
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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
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Invalid names: Ischnochiton (Ischnochiton) rissoi Angelo and Smriglio 1999 [synonym], Ischnochiton (Simplischnochiton) rissoi Angelo 1999 [synonym]
G. †Stenochiton Adams 1864
Subfm. †Lepidochitoninae
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G. Lepidochitona Gray 1821
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Subg. †Lepidochitona (Lepidochitona) Gray 1821
†Lepidochitona caprearum Scacchi 1836
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Invalid names: Lepidochitona (Lepidochitona) caprearum Koskeridou 2009 [synonym], Middendorfia caprearum Laghi 1977 [synonym]
†Lepidochitona gantensis Dell'Angelo et al. 2014
†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
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†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
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Invalid names: Ischnochiton (Lepidozona) sinudentatus Carpenter 1892 [synonym]
G. Stenoplax Carpenter 1879
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†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]
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Invalid names: Ischnochiton (Stenoplax) acrior Carpenter 1892 [synonym], Ischnochiton acrior Carpenter 1892 [synonym]
†Stenoplax quimperensis Dell'Angelo et al. 2011
G. †Stenosemus Middendorff 1847
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†Stenosemus dolii Van Belle and Angelo 1998
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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
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Tonicella lineata Wood 1815 [lined red chiton]
Tonicella marmorea Fabrius 1780
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Age range
Maximum range based only on fossils: base of the Sinemurian to the top of the Late/Upper Pleistocene or 199.50000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 192.9 Ma
Minimum age of oldest fossil (stem group age): 192.9 Ma
Collections (63 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Sinemurian | Italy | Allochiton altus, Heterochiton buccai, Allochiton costulatus, Heterochiton compressus, Allochiton gemmellaroi, Heterochiton giganteus, Heterochiton zitteli, Heterochiton vinassai (91197) | |
| Margaritatus | Germany | Ischnochiton marloffsteinensis (139314) | |
| Ypresian | USA (Washington) | Lepidochitona squiresi (176361) | |
| Lutetian | United Kingdom (England) | Stenoplax anglica (8124) | |
| Lutetian - Bartonian | Hungary | Lepidochitona szoetsi, Lepidochitona gantensis, Lepidochitona viciani (172909) | |
| Priabonian | USA (Washington) | Ischnochiton sp. A, Stenoplax sp. A, Stenoplax sp. B (40733) Stenoplax quimperensis (91606) | |
| Priabonian - Rupelian | USA (Washington) | Ischnochiton sp. B, Lepidochitona lioplax, Lepidochitona sp., Ischnochiton goederti (180196) Lepidochitona washingtonensis (180194) | |
| Rupelian | USA (Washington) | Stenoplax sp. A (62246) | |
| Langhian | Japan | Lepidozona sp. (44958) | |
| Pliocene | USA (California) | Ischnochiton conspicuus (120820) | |
| Late/Upper Pliocene | Italy | Ischnochiton anserinus, Stenosemus dolii (175395) Ischnochiton rissoi, Ischnochiton anserinus, Ischnochiton martinelli, Stenosemus dolii (175549) Ischnochiton rissoi, Ischnochiton anserinus, Ischnochiton martinelli, Stenosemus dolii, Lepidochitona caprearum (175552) Stenosemus dolii (175548 175551) | |
| Late/Upper Pliocene | USA (California) | Ischnochiton sp. (238436) | |
| Early/Lower Pleistocene | USA (California) | Ischnochiton magdalenensis (187025) Stenoplax heathiana (202495 202496) | |
| Pleistocene | USA (California) | Ischnochiton conspicuus (237610) Ischnochiton conspicuus, Ischnochiton acrior (139843) Ischnochiton conspicuus, Ischnochiton fallax, Ischnochiton magdalenensis, Ischnochiton acrior, Ischnochiton cooperi, Ischnochiton mertensii, Ischnochiton sinudentatus (138719) Ischnochiton radians, Ischnochiton decipiens, Ischnochiton magdalenensis (201624) Ischnochiton sp. (240573 240574) | |
| Pleistocene | Mexico (Baja California) | Lepidozona pectinulatus, Tonicella lineata, Stenoplax acrior, Stenoplax conspicuus (96590) Stenoplax acrior (96592) Tonicella lineata (96593) | |
| Pleistocene - Holocene | USA (California) | Ischnochiton conspicuus, Ischnochiton pectinulatus (138721) Ischnochiton conspicuus, Ischnochiton sanctaemonicae, Ischnochiton pectinulatus, Ischnochiton acrior (138821) | |
| Quaternary | USA (California) | Lepidozona sp., Lepidozona californiensis, Stenoplax sp., Tonicella lineata, Stenoplax conspicuus, Cyanoplax dentiens (37933) Stenoplax conspicuus (37940) Stenoplax sp., Tonicella lineata (37947) Tonicella lineata (37937) | |
| Middle Pleistocene | USA (California) | Ischnochiton trifidus (200409 223325) Lepidochitona dentiens, Ischnochiton fallax, Ischnochiton regularis, Ischnochiton cooperi (138723) Stenoplax magdalenensis (202494) Stenoplax magdalenensis, Lepidochitona keepiana (202492 202493) | |
| Middle Pleistocene | USA (Florida) | Ischnochiton sp. (61310) | |
| Late/Upper Pleistocene | USA (Alaska) | Tonicella marmorea (37632) | |
| Late/Upper Pleistocene | USA (California) | Ischnochiton acrior, Cyanoplax hartwegii, Ischnochiton magdalenensis (219030) Ischnochiton acrior, Ischnochiton conspicuus, Ischnochiton sanctaemonicae, Ischnochiton pectinulatus (96566) Ischnochiton acrior, Ischnochiton magdalenensis (219029) Ischnochiton cooperi (222968) Ischnochiton regularis (222660 222674) Ischnochiton sanctaemonicae (59063) Ischnochiton sp. (240595) Lepidochitona keepiana (96589) Lepidozona brunnea, Ischnochiton acrior, Ischnochiton conspicuus, Lepidochitona keepiana, Cyanoplax hartwegii, Ischnochiton magdalenensis (160361) Stenoplax heathiana (202491) Stenoplax sp., Stenoplax heathiana (202490) Tonicella lineata, Cyanoplax hartwegii, Cyanoplax fackenthallae, Ischnochiton magdalenensis, Ischnochiton cooperi (207041) Tonicella lineata, Ischnochiton magdalenensis, Ischnochiton cooperi (202936 222973) Tonicella sp. (240650) | |
| Late/Upper Pleistocene | Mexico | Tonicella lineata, Stenoplax heathiana, Lepidozona cooperi (52347) | |
| Late/Upper Pleistocene (interglacial) | Mexico (Baja California) | Lepidozona sp. (89573) | |
| Late/Upper Pleistocene | Mexico (Baja California) | Lepidozona pectinulatus (96591) |