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Acila (Truncacila)

Bivalvia - Nuculida - Nuculidae

Taxonomy
Acila (Truncacila) was named by Grant and Gale (1931) [Sepkoski's age data: K Apti R]. It is extant.

It was reranked as Truncacila by Vokes (1980), Sepkoski (2002).

It was assigned to Nuculidae by Vokes (1980); to Nuculoida by Sepkoski (2002); and to Acila by Grant and Gale (1931), Schenck (1936), Woodring (1938), Turner (1938), Durham (1944), Faustman (1964), Hertlein and Grant (1972), Moore (1976), Tashiro and Kozai (1982), Moore (1983), Squires (1984), Squires (1987), Squires (1988), Squires (1999), Coan et al. (2000), Matsubara (2002), Kafanov and Ogasawara (2003), Squires and Saul (2006), Huber (2010), Coan and Valentich-Scott (2012), Hendy (2020).

Subtaxa
Acila (Truncacila) allisoni, Acila (Truncacila) bellula, Acila (Truncacila) bivirgata, Acila (Truncacila) blancoensis, Acila (Truncacila) castrensis (syn. Nucula lyalli, Acila empirensis, Acila (Truncacila) beringiana), Acila (Truncacila) cobboldae, Acila (Truncacila) conradi (syn. Nucula divaricata), Acila (Truncacila) dalli, Acila (Truncacila) decisa (syn. Acila lajollaensis, Acila gabbiana, Nucula (Acila) stillwaterensis), Acila (Truncacila) demessa (syn. Nucula truncata), Acila (Truncacila) galinae, Acila (Truncacila) grahami, Acila (Truncacila) haidana, Acila (Truncacila) hokkaidoensis, Acila (Truncacila) jucunda, Acila (Truncacila) moneronica, Acila (Truncacila) muta, Acila (Truncacila) nagaoi, Acila (Truncacila) nehalemensis, Acila (Truncacila) osugii, Acila (Truncacila) princeps, Acila (Truncacila) rosaria, Acila (Truncacila) schencki, Acila (Truncacila) shumardi, Acila (Truncacila) taliaferroi (syn. Nucula (Acila) hamiltonensis)
Species lacking formal opinion data
Acila antefultoni, Acila asachiensis, Acila ashiyaensis, Acila chausiensis, Acila chicotana, Acila cobboldiae, Acila demessa, Acila elongata, Acila elongata, Acila elongata, Acila enpirensis, Acila ermani, Acila eximia, Acila gettisburgensis, Acila gottschei, Acila granulata, Acila himenourensis, Acila ilpinensis, Acila incignis, Acila insignis, Acila insignis, Acila isignis, Acila isthmica, Acila kovatschensis, Acila kusiroensis, Acila longa, Acila marujamensis, Acila minima, Acila mirabilis, Acila munda, Acila nakazimai, Acila nakazimai, Acila nehalemensis, Acila nehalemensis, Acila oyamadensis, Acila parva, Acila pecticostata, Acila picturata, Acila picturata, Acila piura, Acila plana, Acila pleschakovi, Acila praevigilia, Acila pusilla, Acila schomburgki, Acila schumardi, Acila submariabilis, Acila tosaensis, Acila triangula, Acila trilineata, Acila vengeriana, Acila vereshagini, Truncacila korjakensis, Truncacila munda, Truncacila shimojimensis, Truncacila subdemessa, Truncacila yoshidai
Entered
by J. Sepkoski on 2003-01-23; modified by A. Hendy on 2025-06-26

Synonymy list
YearName and author
1931Acila (Truncacila) Grant and Gale
1936Acila (Truncacila) Schenck p. 23
1938Acila (Truncacila) Turner p. 41
1938Acila (Truncacila) Woodring p. 29
1944Acila (Truncacila) Durham p. 133
1964Acila (Truncacila) Faustman p. 113
1972Acila (Truncacila) Hertlein and Grant p. 147
1976Acila (Truncacila) Moore p. 42
1980Truncacila Vokes p. 3
1982Acila (Truncacila) Tashiro and Kozai p. 70
1983Acila (Truncacila) Moore p. A9
1984Acila (Truncacila) Squires p. 40
1987Acila (Truncacila) Squires p. 54
1988Acila (Truncacila) Squires p. 17
1999Acila (Truncacila) Squires p. 22
2000Acila (Truncacila) Coan et al. p. 74
2002Acila (Truncacila) Matsubara p. 134
2002Truncacila Sepkoski
2003Acila (Truncacila) Kafanov and Ogasawara p. 51
2006Acila (Truncacila) Squires and Saul p. 89
2010Acila (Truncacila) Huber p. 89
2012Acila (Truncacila) Coan and Valentich-Scott p. 34
2020Acila (Truncacila) Hendy

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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
subgenusTruncacilaGrant and Gale 1931

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.

Subg. Acila (Truncacila) Grant and Gale 1931
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†Acila (Truncacila) allisoni Squires and Saul 2006
†Acila (Truncacila) bellula Slodkewitsch 1967
Acila (Truncacila) castrensis Hinds 1843 [divaricate nutclam]
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Invalid names: Acila (Truncacila) beringiana Slodkevisch 1967 [synonym], Acila empirensis Howe 1922 [synonym], Nucula lyalli Baird 1863 [synonym]
+
Invalid names: Nucula divaricata Conrad 1848 [replaced]
†Acila (Truncacila) dalli Arnold 1908
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Invalid names: Acila gabbiana Dickerson 1916 [synonym], Acila lajollaensis Hanna 1927 [synonym], Nucula (Acila) stillwaterensis Weaver and Van Winkle Palmer 1922 [synonym]
+
Invalid names: Nucula truncata Gabb 1864 [replaced]
†Acila (Truncacila) galinae Slodkewitsch 1967
†Acila (Truncacila) grahami Squires and Saul 2006
†Acila (Truncacila) haidana Packard in Schenck 1936
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
+
Invalid names: Nucula (Acila) hamiltonensis Clark 1932 [replaced]
Invalid names: Acila muta markleyensis Clark 1918 [invalid subgroup]
Diagnosis
No diagnoses are available