PBDB Taxon

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

Nuculites

Bivalvia - Nuculanida - Cucullellidae

Taxonomy

Nuculites was named by Conrad (1841). Its type is Nuculites oblongatus. It is the type genus of Nuculitidae.

It was assigned to Malletiidae by Pojeta and Gilbert-Tomlinson (1977); to Malletiinae by Cox et al. (1969), Toni (1975), Harrison and Harrison (1975), Hayami and Kase (1977) and Vokes (1980); to Nuculoida by Sepkoski (2002); to Nuculitidae by Bradshaw (1999) and Bouchet et al. (2010); and to Cucullellinae by Machado et al. (2021).

Species

Cleidophorus catherinae, Cleidophorus delawarensis, Cleidophorus eductus, Cleidophorus hollebeni, Cleidophorus perdubius, Cleidophorus planulata, Cleidophorus striatulus, Cleidophorus striatulus, Cleidophorus trapezoidalis, Cucullella antiqua, N. (Gonionuculites), N. ichikawai, N. kimuari, N. neglectus, N. oblongatus (type species), N. planulatus, N. suboblongatus, N. wattii, Pyrenomoeus cuneatus

Species lacking formal opinion data

N. africana, N. antiquus, N. argentinium, N. brasiliensis, N. cawdori, N. cuneiformis, N. ellipticus, N. frigidus, N. kimurai, N. maccoyianus, N. primus, N. triqueter

Synonyms

Cleidophorus was named by Hall (1847). Its type is Nuculites planulata.

It was reranked as Nuculites (Cleidophorus) by Pojeta (1971); it was synonymized subjectively with Nuculites by Cox et al. (1969) and Bretsky and Bretsky (1977).

It was assigned to Nuculites by Pojeta (1971).
Cucullella was named by McCoy (1851). Its type is Cucullaea antiqua.

It was synonymized subjectively with Nuculites by Cox et al. (1969).

It was assigned to Cucullellinae by Bouchet et al. (2010).
Pyrenomoeus was named by Hall (1852). Its type is Pyrenomoeus cuneatus.

It was synonymized subjectively with Nuculites by Cox et al. (1969).

It was assigned to Nuculidae by Vokes (1980).

Synonymy list

Year	Name and author
1841	Nuculites Conrad
1847	Cleidophorus Hall p. 300
1851	Cucullella McCoy p. 50
1852	Pyrenomoeus Hall p. 87
1969	Nuculites Cox et al. p. N233
1971	Nuculites (Cleidophorus) Pojeta
1975	Nuculites Harrison and Harrison p. 212
1975	Nuculites Toni
1977	Nuculites Hayami and Kase
1977	Nuculites Pojeta and Gilbert-Tomlinson p. 16
1980	Nuculites Vokes p. 4
1980	Pyrenomoeus Vokes p. 221
1999	Nuculites Bradshaw
2002	Nuculites Sepkoski
2010	Cucullella Bouchet et al.
2010	Nuculites Bouchet et al.
2021	Nuculites Machado et al. p. 22

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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	Nuculaniformii	Carter et al. 2000
order	Nuculanida	(Carter et al. 2000)
superfamily	Malletioidea	Adams and Adams 1857
family	Cucullellidae	Fischer 1886
subfamily	Cucullellinae	Fischer 1886
genus	Nuculites

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. †Nuculites Conrad 1841

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Subg. †Nuculites (Gonionuculites) Babin et al. 2001

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†Nuculites (Gonionuculites) celticus Babin et al. 2001

†Nuculites ichikawai Nakazawa and Newell 1968

†Nuculites kimuari Hayasaka 1924

†Nuculites neglectus Hall 1862

†Nuculites oblongatus Conrad 1841

†Nuculites planulatus Conrad 1841

†Nuculites suboblongatus Kobayashi 1934

†Nuculites wattii Tate 1896

Invalid names: Cleidophorus Hall 1847 [synonym], Cucullella McCoy 1851 [synonym], Pyrenomoeus Hall 1852 [synonym]

Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	8	13.7	9.00	20.0	14.5	4.27
valve height	5	13.3	8.30	23.0	13.8	5.54

Composition:

aragonitec

Entire body:

yesg

Adult length:

10 to < 100g

Adult width:

10 to < 100g

Locomotion:

facultatively mobilec

Life habit:

infaunalc

Diet:

suspension feederc

Vision:

blindc

Comments:

BODY SIZE: Data from Cox et al. (1969).g

Created:

2009-06-05 12:33:00

Modified:

2009-06-05 14:33:10

Source: g = genus, c = class

References: Aberhan et al. 2004, Hendy 2009

Age range: base of the Arenig to the top of the Changhsingian or 478.60000 to 252.17000 Ma

Collections (426 total)

Time interval	Ma	Country or state	Original ID and collection number
Oldest occurrences
Tremadoc	486.5 - 477.7	China (Guizhou)	N. sp. (5279)
Lancefieldian	484.3 - 474.9	Australia (Tasmania)	N. sp. (2671)
Lancefieldian - Bendigonian	484.3 - 473.1	Australia (Tasmania)	N. sp. (211109)
Arenig	478.6 - 466.0	France (Ille-et-Vilaine)	N. acuminatus, N. tortus (20860) N. sp. (20852)
Llanvirn	468.0 - 458.4	South Korea (Kangwon-do)	N. suboblongatus (56171)
Soudleyan - Marshbrookian	458.4 - 454.0	United Kingdom (England)	N. sp. (3651 3654)
Caradoc	458.4 - 449.5	United Kingdom (Wales)	N. sp. (348)
Caradoc	458.4 - 449.5	Canada (Quebec)	N. postvolutus (77220 77221) N. praevolutus (77222)
Caradoc	458.4 - 449.5	Canada (Ontario)	N. sp. (336)
Late/Upper Ordovician	458.4 - 443.8	USA (New York)	N. scitulus (347)
Youngest occurrences
Time interval	Ma	Country or state	PBDB collection number
Frasnian	382.7 - 372.2	South Africa (Eastern Cape)	N. sp. (77958)
Frasnian	382.7 - 372.2	Spain (Aragon)	N. sp. (40448)
Late/Upper Frasnian	379.5 - 376.1	Libya	N. sp. (35637 35638)
Meramecian	343.0 - 335.5	USA (Virginia)	N. sp. (6999 7042)
Roadian	272.3 - 268.8	USA (Texas)	Cleidophorus delawarensis (108822)
Wordian	266.9 - 264.28	Italy	Cleidophorus eductus, Cleidophorus striatulus, Cleidophorus catherinae (108672) Cleidophorus perdubius (233340)
Wuchiapingian	259.9 - 254.17	United Kingdom	Cleidophorus hollebeni (161470)
Lopingian	259.9 - 252.17	Japan	N. kimurai (200777)
Changhsingian	254.17 - 252.17	Japan	N. ichikawai (114489)
Changhsingian	254.17 - 252.17	Pakistan	Cleidophorus striatulus (119554) Cleidophorus trapezoidalis (119720)