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Trisidos

Bivalvia - Arcida - Arcidae

Taxonomy
Trisidos was named by Ršding (1798) [Sepkoski's age data: T Eo-l R Sepkoski's reference number: 914]. It is extant.

It was reranked as Arca (Trisidos) by Grant and IV and Gale (1931).

It was assigned to Arca by Grant and IV and Gale (1931); to Arcidae by Mukerjee (1939), Lamprell and Healy (1998); to Arcinae by Vokes (1980), Tiwari (2001); and to Arcoida by Sepkoski (2002).

Synonymy list
YearName and author
1798Trisidos Ršding
1931Arca (Trisidos) Grant, IV and Gale p. 144
1939Trisidos Mukerjee p. 24
1980Trisidos Vokes p. 13
1998Trisidos Lamprell and Healy p. 52
2001Trisidos Tiwari p. 153
2002Trisidos Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
RankNameAuthor
subclassAutobranchia(Groblen 1894)
infraclassPteriomorphia(Beurlen 1944)
—OstreomorphiFerussac 1822
—ArcioniGray 1854
orderArcida(Stoliczka 1871)
superfamilyArcoidea(Lamarck 1809)
familyArcidaeLamarck 1809
subfamilyArcinaeLamarck 1809
genusTrisidosRšding 1798

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.

G. Trisidos Ršding 1798
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Trisidos semitorta Lamarck 1819
Trisidos tortuosa Linnaeus 1758
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Invalid names: Trisidos yongei Iredale 1939 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragonitef
Entire body: yesf
Adult length: 10 to < 100f
Adult width: 10 to < 100f
Adult height: 10 to < 100f
Thickness: intermediatef
Folds: minorf
Ribbing: majorf
Spines: nonef
Internal reinforcement: nonef
Ontogeny: accretionf
Environment: lagoonal, coastal, inner shelf, outer shelf, oceanic, brackish, freshwaterf
Locomotion: stationarysubf
Attached: yessubf
Life habit: epifaunalsubf
Diet: suspension feedersubf
Vision: limitedf
Created: 2009-08-18 18:09:02
Modified: 2009-08-18 20:09:02
Source: subf = subfamily, f = family
References: Hendy et al. 2009, Mikkelsen and Bieler 2008

Age range

Maximum range based only on fossils: base of the Early/Lower Oligocene to the top of the Early/Lower Pleistocene or 33.90000 to 0.77400 Ma
Minimum age of oldest fossil (stem group age): 27.3 Ma

Collections (31 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Oligocene33.9 - 27.3Pakistan Arca semitorta (77158)
Rupelian33.9 - 27.3Pakistan Arca semitorta (77159)
Chattian27.3 - 23.04Hungary T. schafarziki (8211)
Early/Lower Miocene23.04 - 15.98India T. protortuosum (77652) T. prototortuosum (77653 77654) T. semitorta (72220) T. sp. (78641) T. sp., T. prototortuosum, T. semitorta (72083) T. tortuosa (72084 76573 76574)
Early/Lower Miocene23.04 - 15.98India (Meghalaya) T. sp. (46493)
Early/Lower Miocene23.04 - 15.98Pakistan Arca semitorta (77160 77172)
Middle Miocene15.98 - 11.63Indonesia T. semitorta (70081)
Late/Upper Miocene11.63 - 5.333Philippines T. semitorta (70138)
Late/Upper Miocene11.63 - 5.333Philippines (Panay) T. semitorta (41649)
Late/Upper Miocene11.63 - 5.333Indonesia T. semitorta (70078 70083)
Pliocene5.333 - 2.58Pakistan T. tortuosa (55400)
Pliocene5.333 - 2.58Indonesia (New Guinea) T. tortuosa (42399)
Pliocene - Pleistocene5.333 - 0.0117Malaysia T. semitorta (72096 72097 72098)
Late/Upper Pliocene3.6 - 2.58Indonesia T. semitorta (70079)
Early/Lower Pleistocene2.58 - 0.774Taiwan T. kiyonoi (96258 96259 96264 96279)
Pleistocene2.58 - 0.0117Pakistan T. tortuosa (55401)