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Acila (divaricate nutclam)

Bivalvia - Nuculida - Nuculidae

Synonymy list
YearName and author
1858Acila Adams and Adams p. 545
1869Nucula (Acila) Gabb p. 197
1903Nucula (Acila) Arnold p. 95
1922Nucula (Acila) Weaver and Palmer p. 6
1925Nucula (Acila) Oldroyd p. 2
1928Nucula (Acila) Nagao p. 21
1931Nucula (Acila) Grant, IV and Gale
1931Acila Olsson p. 34
1932Nucula (Acila) Nagao p. 50
1936Acila Schenck p. 23
1938Acila Turner p. 41
1938Acila Woodring p. 28
1944Acila Durham p. 133
1964Acila Faustman p. 113
1972Acila Hertlein and Grant p. 147
1973Acila Woodring p. 489
1976Acila Moore p. 42
1980Acila Vokes p. 1
1982Acila Tashiro and Kozai p. 70
1983Acila Moore p. A8
1984Acila Moore p. 25
1984Acila Squires p. 40
1987Acila Squires p. 54
1988Acila Squires p. 17
1999Acila Squires p. 22
2000Acila Coan et al. pp. 71, 74
2001Acila Todd
2002Acila Matsubara p. 134
2002Acila Sepkoski
2010Acila Huber p. 85
2012Acila Coan and Valentich-Scott p. 34

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

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. Acila Adams and Adams 1858 [divaricate nutclam]
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Subg. Acila (Acila) Adams and Adams 1858
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Acila (Acila) brevis Nagao and Huzioka 1941
Acila (Acila) isthmica Brown and Pilsbry 1911
Acila (Acila) kholmskensis Krishtofovich 1964
Acila (Acila) mirabilis Adams and Reeve 1850
Acila (Acila) praedivaricata Nagao and Huzioka 1941
Acila (Acila) semirostrata Grant, IV and Gale 1931
Acila (Acila) shimoyamai Oyama and Mizuno 1958
Acila (Acila) submirabilis Makiyama 1926
Acila (Acila) vigilia Schenck 1936
Subg. Acila (Truncacila) Grant and Gale 1931
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Acila (Truncacila) allisoni Squires and Saul 2006
Acila (Truncacila) bellula Slodkewitsch 1967
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Invalid names: Acila (Truncacila) beringiana Slodkevisch 1967 [synonym], Acila empirensis Howe 1922 [synonym], Nucula lyalli Baird 1863 [synonym]
Acila (Truncacila) dalli Arnold 1908
+
Invalid names: Acila gabbiana Dickerson 1916 [synonym], Acila lajollaensis Hanna 1927 [synonym]
Acila (Truncacila) galinae Slodkewitsch 1967
Acila (Truncacila) grahami Squires and Saul 2006
Acila (Truncacila) jucunda Thiele and Jaeckel 1931
Acila (Truncacila) moneronica Slodkewitsch 1967
Acila (Truncacila) nagaoi Oyama and Mizuno 1958
Acila (Truncacila) osugii Nagao and Huzioka 1941
Acila (Truncacila) rosaria Squires and Saul 2006
Acila (Truncacila) schencki Stoyanow 1949
Acila nehalemensis Hanna 1924
Acila paita Olsson 1931
Acila plura Olsson 1931
Nucula (Acila) ermanni Girard 1843
Nucula (Acila) mirabilis Adams and Reeve 1850
Nucula (Acila) nelsoni Clark 1925
Nucula (Acila) stillwaterensis Weaver and Palmer 1922
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
height216.016.016.016.0-

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

Maximum range based only on fossils: base of the Aptian to the top of the Late/Upper Pleistocene or 125.00000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 113.0 Ma

Collections (518 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Aptian125.0 - 113.0USA (Arizona) Acila schencki (65011)
Albian113.0 - 100.5USA (California) Acila sp. (185408)
Late/Upper Albian105.3 - 99.6Japan Acila tosaensis (122347 123127)
Cenomanian100.5 - 93.9Japan Acila himenourensis (117145) Acila hokkaidoensis (87007)
Cenomanian100.5 - 93.9USA (California) Acila sp. (185726 185734)
Cenomanian100.5 - 93.9USA (Texas) Acila chicotana (6595 6606 6639 6642 6646) Acila sp. (4647 4655)
Turonian93.9 - 89.8Japan (Teshio) Acila hokkaidoensis (39822)
Turonian93.9 - 89.8USA (California) Acila sp. (185415)
Early/Lower Turonian93.5 - 89.3Japan Acila hokkaidoensis (87008)
Middle Turonian93.5 - 89.3USA (Alaska) Acila sp. (51920)
Coniacian89.8 - 86.3USA (California) Acila demessa (44214 44232)
Coniacian89.8 - 86.3Japan (Teshio) Acila hokkaidoensis (40122)
Coniacian - Santonian89.8 - 83.6USA (California) Acila sp. (185448)
Early/Lower Coniacian89.3 - 85.8Japan (Fukushima) Acila hokkaidoensis (39626)
Santonian86.3 - 83.6USA (California) Acila demessa (86956 185391)
Santonian86.3 - 83.6Japan (Teshio) Acila hokkaidoensis (40126)
Santonian86.3 - 83.6Japan Acila sp. (62210 62335 219966)
Early/Lower Santonian85.8 - 83.5Japan Acila hokkaidoensis (115281 115284 219958)
Late/Upper Santonian85.8 - 83.5Japan Acila hokkaidoensis (82349 87009 115287 115289 115295 115297 115299)
Campanian83.6 - 72.1Japan (Teshio) Acila hokkaidoensis (39821)