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Acila (Truncacila) muta

Bivalvia - Nuculida - Nuculidae

Taxonomy
Acila muta was named by Clark (1918) [DISTRIBUTION: Late Oligocene; Pacific Coast, North America.]. Its type specimen is UCMP 11196, a shell, and it is a 3D body fossil. Its type locality is UCMP loc. 1131, Walnut Creek, which is in an Oligocene marine horizon in California.

It was synonymized subjectively with Nucula (Acila) castrensis by Grant and IV and Gale (1931); it was recombined as Acila (Truncacila) muta by Durham (1944), Addicott (1973), Moore (1983).

Synonyms
Synonymy list
YearName and author
1918Acila muta Clark pp. 119-120 figs. pl. 13, figs. 6, 12, 13
1918Acila muta markleyensis Clark p. 121 figs. Plate 13, figure 3
1944Acila (Truncacila) muta Durham p. 134
1973Acila (Truncacila) muta Addicott p. 22
1983Acila (Truncacila) muta Moore pp. A11 - A12 figs. Plate 1, figures 19, 20

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
RankNameAuthor
subclassProtobranchia(Pelseneer 1889)
superorderNuculiformiiDall 1889
orderNuculida(Dall 1889)
superfamilyNuculoidea(Gray 1824)
familyNuculidaeGray 1824
genusAcilaAdams and Adams 1858
subgenusTruncacilaGrant and Gale 1931
speciesmuta()

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.

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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragonitef
Entire body: yesf
Adult length: 1.0 to < 10f
Adult width: 1.0 to < 10f
Adult height: 1.0 to < 10f
Thickness: thinf
Folds: nonef
Ribbing: minorf
Spines: nonef
Internal reinforcement: nonef
Ontogeny: accretionf
Environment: coastal, inner shelf, outer shelf, oceanicf
Locomotion: facultatively mobilef
Life habit: infaunalf
Diet: deposit feederf
Diet 2: suspension feederf
Vision: blindc
Created: 2008-11-15 10:09:53
Modified: 2009-08-18 20:13:53
Source: f = family, c = class
References: Aberhan et al. 2004, Mikkelsen and Bieler 2008

Age range: Late/Upper Oligocene or 27.30000 to 23.04000 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Chattian27.3 - 23.04USA (Washington) Acila muta (208172)
Chattian27.3 - 23.04USA (California) Acila muta (180446)
Late/Upper Oligocene27.3 - 23.04USA (California) Acila muta (72406 72408 219733 219758) Acila muta, Acila muta (122273)