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Polyplacophora (chiton)

Polyplacophora -

Polyplacophora was named by de Blainville (1816) [also attributed to Gray 1821]. It is extant.

It was reranked as the order Polyplacophora by Martin (1904).

It was assigned to Amphineura by Martin (1904); to Mollusca by Barnes (1998), Wells and Houston (2001) and Sepkoski (2002); and to Serialia by Giribet et al. (2006).

Synonymy list
YearName and author
1816Polyplacophora de Blainville
1904Polyplacophora Martin p. 270
1998Polyplacophora Barnes
2001Polyplacophora Wells and Houston p. 19
2002Polyplacophora Sepkoski, Jr.
2006Polyplacophora Giribet et al. p. 7725

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EubilateriaAx 1987
classPolyplacophorade Blainville 1816
classPolyplacophorade Blainville 1816

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.

No diagnoses are available
No measurements are available
Composition: aragonitec
Environment: marine, brackishc
Locomotion: facultatively mobilec
Attached: yesc
Life habit: epifaunalc
Diet: grazerc
Vision: limitedc
Comments: LIFE HISTORY: Surficial, fully motile slow/facultatively motile unattached, surface deposit feeding according to Bambach et al (2007).c
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 Sunwaptan to the top of the Holocene or 498.50000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 485.4 Ma

Collections (290 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Cambrian541.0 - 485.4USA (Utah) Matthevia sp. (259)
Cambrian541.0 - 485.4USA (New York) Matthevia sp. (254)
Franconian501.0 - 485.4USA (Utah) Matthevia variabilis (253)
Trempealeauan501.0 - 485.4USA (Missouri) Aulochiton sannerae (98342) Chelodes cooperi, Aulochiton sannerae (98345) Elongata perplexa, Hemithecella elongata (64586) Hemithecella elongata, Hemithecella eminensis, Aulochiton sannerae, Paradycheia dorisae (98338) Hemithecella eminensis (8690 8692 49505) Hemithecella eminensis, Chelodes cooperi, Aulochiton sannerae, Paradycheia dorisae (98337) Paradycheia dorisae (98339) Preacanthochiton depressus (98340 98344) Preacanthochiton productus (98341)
Trempealeauan501.0 - 485.4USA (Wisconsin) Matthevia sp. (255)
Sunwaptan498.5 - 485.4USA (New York) Matthevia sp. (85187)
Sunwaptan498.5 - 485.4USA (Utah) Eukteanochiton milleri (94566) Matthevia wahwahensis (94560 94561 94564 94565) Matthevia wahwahensis, Orthriochiton utahensis (94562 94563)
Deming485.4 - 478.6USA (Virginia) Hemithecella expansa (56651)
Warendian485.4 - 478.6Australia (Queensland) Chelodes whitehousei (77486 77510)
Gasconadian485.4 - 477.7USA (Missouri) Hemithecella expansa (64584) Matthevia erecta (98347) Matthevia walcotti (98348) Robustum nodum (156485 157090)
Tremadoc485.4 - 477.7USA (Missouri) Hemithecella abrupta, Hemithecella expansa (8940) Hemithecella expansa, Robustum phallerium (8939) Hemithecella quinquelites, Robustum nodum, Robustum phallerium, Hemithecella sp. (8943) Hemithecella sp. (8941)
Tremadocian485.4 - 477.7USA (Virginia) Hemithecella expansa (78881)
Jefferson485.4 - 468.1USA (Oklahoma) Gotlandochiton hami (80101) Gotlandochiton sp., Ivoechiton sp., Paleochiton kindbladensis, Ivoechiton oklahomensis, Ivoechiton calathicolus, Eochiton arbucklensis, Gotlandochiton hami (80100) Ivoechiton calathicolus (80102)
Dobrotiva466.0 - 460.9Czech Republic Helminthochiton sp. (3859)
Blackriveran460.9 - 449.5Canada (Quebec) Prisochiton canadensis (63816)
Blackriveran460.9 - 449.5USA (Wisconsin) Echinochiton dufoei (98349)
Chatfieldian460.9 - 449.5USA (Kentucky) Alastega martini (100233) Alastega martini, Listrochiton weiri (99334 100288) Listrochiton weiri (100234)
Rocklandian460.9 - 449.5USA (Kentucky) Amblytochiton incomptus, Spicuchelodes cressmani (87737) Spicuchelodes cressmani (87962 100130)
Shermanian460.9 - 449.5USA (Kentucky) Helminthochiton blacki (77357 87822)
Turinian460.9 - 449.5USA (Kentucky) Helminthochiton blacki (100128 100176 100231)