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Polyplacophora
Description | Chitons are marine molluscs of varying size in the class Polyplacophora, formerly known as Amphineura. About 940 extant and 430 fossil species are recognized. From Wikipedia article at https://en.wikipedia.org/wiki/Polyplacophora, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | ||||||||||||||||||||||||||||||||||||
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Source Data |
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Rank | class | ||||||||||||||||||||||||||||||||||||
Taxonomy (GBIF,PBDB) | Life : Animalia : Mollusca : Polyplacophora | ||||||||||||||||||||||||||||||||||||
Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||||||||||||||
Classification (PBDB,GBIF) |
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Common Name | chiton | ||||||||||||||||||||||||||||||||||||
Scientific Name | Polyplacophora | ||||||||||||||||||||||||||||||||||||
Opinions (PBDB) |
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Status (PBDB) | extant | ||||||||||||||||||||||||||||||||||||
Taxon Size (PBDB) | 425 | ||||||||||||||||||||||||||||||||||||
Extant Size (PBDB) | 94 (22%) | ||||||||||||||||||||||||||||||||||||
First Recorded Appearance | 501 - 485 Ma Cambrian | ||||||||||||||||||||||||||||||||||||
Environment | marine,brackish | ||||||||||||||||||||||||||||||||||||
Motility | facultatively mobile, attached | ||||||||||||||||||||||||||||||||||||
Vision | limited | ||||||||||||||||||||||||||||||||||||
Diet | grazer | ||||||||||||||||||||||||||||||||||||
Ecospace Comments | LIFE HISTORY: Surficial, fully motile slow/facultatively motile unattached, surface deposit feeding according to Bambach et al (2007). | ||||||||||||||||||||||||||||||||||||
Taphonomy | aragonite | ||||||||||||||||||||||||||||||||||||
Primary Reference (PBDB) | J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560 | ||||||||||||||||||||||||||||||||||||
Common Name(s) | Chitone, Käferschnecken, Chitons, Coat-of-mail Shells, Keverslakken, Ledsnäckor, 多板, Chíton, Poliplacoforo, Quíton, Chiton | ||||||||||||||||||||||||||||||||||||
Wikipedia | https://en.wikipedia.org/wiki/Polyplacophora |
External Images
Fossil Distribution
Subtaxa
Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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![]() subclass | listed (PBDB) | 95 | 501 Ma Cambrian | 83.6 Ma Late Cretaceous | |
Chitonida order | accepted (GBIF) | No associated record in PBDB | |||
Lepidopleurida order | accepted (GBIF) | No associated record in PBDB | |||
![]() order | listed (PBDB) | 8 | 393 Ma Early Devonian | 260 Ma Permian | |
![]() order | listed (PBDB) | 447 | 466 Ma Middle Ordovician | 0 Ma Extant | |
![]() suborder | listed (PBDB) | ||||
![]() family | accepted (GBIF) listed (PBDB) | 1 | 461 Ma Middle Ordovician | 461 Ma Middle Ordovician | |
![]() family | accepted (GBIF) listed (PBDB) | 4 | 501 Ma Cambrian | 501 Ma Cambrian | |
![]() family | accepted (GBIF) listed (PBDB) | ||||
Chelodidae family | accepted (GBIF) | No associated record in PBDB | |||
Cobcrephoridae family | accepted (GBIF) | No associated record in PBDB | |||
![]() family | accepted (GBIF) listed (PBDB) | 1 | 265 Ma Permian | 265 Ma Permian | |
![]() family | accepted (GBIF) listed (PBDB) | 3 | 501 Ma Cambrian | 501 Ma Cambrian | |
![]() family | accepted (GBIF) listed (PBDB) | 1 | 461 Ma Middle Ordovician | 461 Ma Middle Ordovician | |
![]() family | accepted (GBIF) listed (PBDB) | 12 | 485 Ma Cambrian | 83.6 Ma Late Cretaceous | |
Haeggochitonidae family | accepted (GBIF) | No associated record in PBDB | |||
![]() family | accepted (GBIF) listed (PBDB) | 2 | 388 Ma Middle Devonian | 383 Ma Late Devonian | |
Ivoechitonidae family | accepted (GBIF) | No associated record in PBDB | |||
Litochitonidae family | accepted (GBIF) | No associated record in PBDB | |||
![]() family | accepted (GBIF) listed (PBDB) | 51 | 501 Ma Cambrian | 419 Ma Early Devonian | |
Olingechitonidae family | accepted (GBIF) | No associated record in PBDB | |||
![]() family | accepted (GBIF) listed (PBDB) | 6 | 501 Ma Cambrian | 461 Ma Middle Ordovician | |
Robustidae family | accepted (GBIF) | No associated record in PBDB | |||
![]() family | accepted (GBIF) listed (PBDB) | 3 | 83.6 Ma Late Cretaceous | 83.6 Ma Late Cretaceous | |
![]() family | accepted (GBIF) listed (PBDB) | ||||
![]() family | accepted (GBIF) listed (PBDB) | 6 | 393 Ma Early Devonian | 260 Ma Permian | |
![]() genus | accepted (GBIF) listed (PBDB) | 4 | 461 Ma Middle Ordovician | 431 Ma Silurian | |
![]() genus | accepted (GBIF) listed (PBDB) | 1 | 431 Ma Silurian | 431 Ma Silurian | |
![]() genus | accepted (GBIF) listed (PBDB) | 5 | 272 Ma Permian | 260 Ma Permian | |
![]() genus | accepted (GBIF) listed (PBDB) | 1 | 431 Ma Silurian | 431 Ma Silurian | |
![]() genus | accepted (GBIF) listed (PBDB) | 1 | 431 Ma Silurian | 431 Ma Silurian | |
![]() genus | accepted (GBIF) listed (PBDB) | 1 | 296 Ma Permian | 296 Ma Permian | |
![]() genus | listed (PBDB) | 1 | 28.1 Ma Oligocene | 28.1 Ma Oligocene | |
![]() genus | accepted (GBIF) listed (PBDB) | 1 | 431 Ma Silurian | 431 Ma Silurian | |
![]() genus | accepted (GBIF) listed (PBDB) | 1 | 359 Ma Late Devonian | 359 Ma Late Devonian | |
Preacanthochiton genus | accepted (GBIF) | No associated record in PBDB | |||
![]() genus | accepted (GBIF) listed (PBDB) | ||||
![]() genus | accepted (GBIF) listed (PBDB) | 2 | 461 Ma Middle Ordovician | 458 Ma Middle Ordovician | |
![]() genus | accepted (GBIF) listed (PBDB) | ||||
![]() genus | accepted (GBIF) listed (PBDB) | 5 | 201 Ma Early Jurassic | 199 Ma Early Jurassic | |
![]() genus | accepted (GBIF) listed (PBDB) | 1 | 279 Ma Permian | 279 Ma Permian | |
Gotlandiochiton hami species | accepted (GBIF) | No associated record in PBDB |
Synonymy List
Year | Name and Author |
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1816 | Polyplacophora de Blainville |
1904 | Polyplacophora Martin p. 270 |
1998 | Polyplacophora Barnes |
2001 | Polyplacophora Wells and Houston p. 19 |
2002 | Polyplacophora Sepkoski, Jr. |
2006 | Polyplacophora Giribet et al. p. 7725 |
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!