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Arca (Arca) sisquocensis

Bivalvia - Arcida - Arcidae

Taxonomy
Arca (Arca) sisquocensis was named by Reinhart (1937). Its type specimen is CIT 1382, a shell, and it is a 3D body fossil. Its type locality is USGS loc. 4475, Fugler Point, which is in a Pliocene marine horizon in California.

It was recombined as Arca sisquocensis by Woodring and Bramlette (1950); it was recombined as Tetrarca sisquocensis by Vermeij and Amano (2021) and Hendy (2021).

Synonymy list
YearName and author
1937Arca (Arca) sisquocensis Reinhart p. 182 figs. Plate 28, figures 1-3
1950Arca sisquocensis Woodring and Bramlette
1972Arca (Arca) sisquocensis Hertlein and Grant p. 153
1983Arca (Arca) sisquocensis Moore p. A33 figs. Plate 5, figures 6, 8, 9
2002Arca (Arca) sisquocensis Hall
2021Tetrarca sisquocensis Hendy
2021Tetrarca sisquocensis Vermeij and Amano p. 44

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassPteriomorphia(Beurlen 1944)
—OstreomorphiFerussac 1822
—ArcioniGray 1854
orderArcida(Stoliczka 1871)
superfamilyArcoidea(Lamarck 1809)
familyArcidaeLamarck 1809
subfamilyArcinaeLamarck 1809
genusArca
subgenusArcaLinnaeus 1758
speciessisquocensis

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.

†Arca (Arca) sisquocensis Reinhart 1937
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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: stationaryg
Attached: yesg
Life habit: epifaunalg
Diet: suspension feederg
Vision: limitedf
Created: 2004-02-29 17:09:41
Modified: 2009-09-09 11:04:20
Source: g = genus, f = family
References: Mikkelsen and Bieler 2008, Aberhan et al. 2004

Age range: base of the Late/Upper Pliocene to the top of the Middle Pleistocene or 3.60000 to 0.12900 Ma

Collections (12 total)


Time interval Ma Country or state Original ID and collection number
Pliocene5.333 - 2.588USA (California) Arca sisquocensis (type locality: 122281)
Piacenzian3.6 - 2.588USA (California) Arca sisquocensis (189542)
Late/Upper Pliocene - Early/Lower Pleistocene3.6 - 0.781USA (California) Arca sisquocensis (217010)
Late/Upper Pliocene - Pleistocene3.6 - 0.0117USA (California) Arca sisquocensis (36867)
Gelasian2.588 - 1.806USA (California) Arca sisquocensis (189765 189766 189768)
Quaternary2.58 - 0.0USA (California) Arca sisquocensis (37940 37947)
Middle Pleistocene0.774 - 0.129USA (California) Arca sisquocensis (203113 203118 207886)