PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Ennucula tenuis

Bivalvia - Nuculida - Nuculidae

Taxonomy

Arca tenuis was named by Montagu (1808) [DISTRIBUTION: Circumboreal and Arctic Ocean, Bering Sea, Gulf of Alaska-California, Mediterranean, Florida, Japan; western North America (Pliocene-Pleistocene).]. It is extant.

It was recombined as Nucula tenuis by Wood (1850), Richards (1962); it was recombined as Nucula (Nucula) tenuis by Grant and IV and Gale (1931); it was recombined as Ennucula tenuis by Coan et al. (2000), Huber (2010), Coan and Valentich-Scott (2012), Hendy (2021).

Sister species lacking formal opinion data

E. greyi, E. nipponica, E. osawanoensis, E. otamaringaensis, E. praenipponica, Nucula beachportensis, Nucula kalimnae, Nucula mareana, Nucula venusta

Synonyms

Nucula bellotii was named by Adams (1856) [DISTRIBUTION: Pleistocene-Recent; Western Atlantic.]. It is extant.

It was recombined as Nuculoma belloti by Bennike et al. (1994); it was synonymized subjectively with Ennucula tenuis by Coan et al. (2000), Hendy et al. (2008), Coan and Valentich-Scott (2012).
Nucula quirica was named by Dall (1916) [HISTORY: Synonym of E. tenuis (Montagu 18080 [Coan et al. 2000]]. It is extant.

It was synonymized subjectively with Ennucula tenuis by Coan et al. (2000), Coan and Valentich-Scott (2012).
Nucula (Ennucula) microsperma was named by Berry (1947) [HISTORY: Synonym of E. tenuis (Montagu 1808) [Coan et al. 2000].]. Its type specimen is Stanford Coll. 7850, a shell, and it is a 3D body fossil. Its type locality is Second St & Pacific Ave of Berry [Lomita Marl], which is in a Pleistocene offshore marl in the Lomita Marl Formation of California.

It was synonymized subjectively with Ennucula tenuis by Coan et al. (2000), Coan and Valentich-Scott (2012).
Nucula (Ennucula) balboana was named by Hertlein and Grant (1972). It is extant. Its type specimen is CAS, a shell.

It was recombined as Nucula (Leionucula) balboana by Moore (1983); it was synonymized subjectively with Ennucula tenuis by Coan et al. (2000), Coan and Valentich-Scott (2012).
Leionucula ovatotruncata was named by Scarlato (1981) [HISTORY: Synonym of E. tenuis (Montagu 1808) [Coan et al. 2000].]. It is extant.

It was synonymized subjectively with Ennucula tenuis by Coan et al. (2000), Coan and Valentich-Scott (2012).
Nucula (Leionucula) leptodonta was named by Bernard (1983) [HISTORY: Synonym of E. tenuis (Montagu 1808) [Coan et al. 2000].]. It is extant.

It was synonymized subjectively with Ennucula tenuis by Coan et al. (2000), Coan and Valentich-Scott (2012).
Nucula expansa was named by Reeve (1855) [DISTRIBUTION: Labrador and north shore Gulf of St Lawrence (Recent); Newfoundland-Maine (Pleistocene)]. It is extant.

It was synonymized subjectively with Ennucula tenuis by Hendy et al. (2008).

Synonymy list

Year	Name and author
1808	Arca tenuis Montagu p. 56 figs. pl. 29, fig. 1
1850	Nucula tenuis Wood p. 84
1855	Nucula expansa Reeve
1856	Nucula bellotii Adams p. 21
1916	Nucula quirica Dall p. 9
1931	Nucula (Nucula) tenuis Grant, IV and Gale
1947	Nucula (Ennucula) microsperma Berry p. 4
1962	Nucula expansa Richards p. 51
1962	Nucula tenuis Richards p. 51
1972	Nucula (Ennucula) balboana Hertlein and Grant p. 145
1981	Leionucula ovatotruncata Scarlato p. 174
1983	Nucula (Leionucula) leptodonta Bernard p. 255
1983	Nucula (Leionucula) balboana Moore p. A8 figs. Plate 1, figure 10
1994	Nuculoma belloti Bennike and et al.
2000	Ennucula tenuis Coan et al. p. 76
2010	Ennucula tenuis Huber p. 88
2012	Ennucula tenuis Coan and Valentich-Scott p. 41
2021	Ennucula tenuis Hendy

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca
class	Bivalvia

Rank	Name	Author
—	Eubivalvia
subclass	Protobranchia	(Pelseneer 1889)
superorder	Nuculiformii	Dall 1889
order	Nuculida	(Dall 1889)
superfamily	Nuculoidea	(Gray 1824)
family	Nuculidae	Gray 1824
genus	Ennucula	Iredale 1931
species	tenuis	(Montagu 1808)

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.

Ennucula tenuis Montagu 1808

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Invalid names: Leionucula ovatotruncata Scarlato 1981 [synonym], Nucula (Ennucula) balboana Hertlein and Grant 1972 [synonym], Nucula (Ennucula) microsperma Berry 1947 [synonym], Nucula (Leionucula) leptodonta Bernard 1983 [synonym], Nucula bellotii Adams 1856 [synonym], Nucula expansa Reeve 1855 [synonym], Nucula quirica Dall 1916 [synonym]

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: Mikkelsen and Bieler 2008, Aberhan et al. 2004

Age range: base of the Carnian to the top of the Holocene or 237.00000 to 0.00000 Ma

Collections (20 total)

Time interval	Ma	Country or state	Original ID and collection number
Carnian	237.0 - 227.3	Italy	Nucula expansa (164208)
Zanclean	5.333 - 3.6	United Kingdom (England)	Nucula tenuis (84763)
Late/Upper Pliocene	3.6 - 2.58	United Kingdom (England)	Nucula tenuis (84764 84798)
Early/Lower Pleistocene	2.58 - 0.774	United Kingdom (England)	Nucula tenuis (98112)
Early/Lower Pleistocene	2.58 - 0.774	Greenland	Nucula tenuis (75092 75099)
Middle Pleistocene	0.774 - 0.129	USA (California)	Nucula microsperma (203119)
Middle Pleistocene (late glacial)	0.774 - 0.129	Canada (New Brunswick)	Nucula tenuis (210895)
Middle Pleistocene	0.774 - 0.129	Greenland	Nuculoma belloti (75197 75200)
Late/Upper Pleistocene	0.129 - 0.0117	USA (Maine)	Nucula expansa (66355 66356 66357) Nucula expansa, Nucula tenuis (66339)
Late/Upper Pleistocene	0.129 - 0.0117	United Kingdom (England)	Nucula tenuis (84832)
Holocene	0.0117 - 0.0	Canada (New Brunswick)	Nucula expansa (66532)
Holocene	0.0117 - 0.0	Canada (Newfoundland and Labrador)	Nucula expansa (66432 66437 66448)