PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Argopecten ventricosus

Bivalvia - Pectinida - Pectinidae

Taxonomy

Pecten ventricosus was named by Sowerby (1842) [DISTRIBUTION: Eastern Pacific (Recent).]. It is extant.

It was recombined as Pecten (Plagioctenium) ventricosus by Dall (1898) and Arnold (1903); it was recombined as Chlamys (Argopecten) cricularis by Hertlein (1968); it was recombined as Argopecten ventricosus by Coan et al. (2000), Coan and Valentich-Scott (2012) and Hendy (2021).

Subspecies

Argopecten circularis bramkampi, Argopecten circularis eldridgei, Argopecten circularis impostor (syn. Pecten proteus), Pecten circularis caucanus, Pecten circularis venezuelanus

Sister species lacking formal opinion data

Chlamys concinnatus

Synonyms

Pecten circularis was named by Sowerby (1835). It is extant.

It was recombined as Pecten (Plagioctenium) circularis by Arnold (1906) and Jordan and Hertlein (1926); it was recombined as Argopecten circularis by Hodson and Hodson (1927) and Moore (1984); it was recombined as Aequipecten circularis by Durham (1950); it was synonymized subjectively with Entolium orbiculare by Dhondt (1971); it was synonymized subjectively with Argopecten ventricosus by Coan et al. (2000) and Hendy (2020).
Pecten (Plagioctenium) calli was named by Hertlein (1925). Its type specimen is CAS 68, a shell, and it is a 3D body fossil.

It was recombined as Argopecten circularis calli by Moore (1984); it was synonymized subjectively with Argopecten ventricosus by Coan et al. (2000).
Pecten inca was named by d'Orbigny (1846). It is extant.

It was synonymized subjectively with Argopecten ventricosus by Coan et al. (2000).
Pecten (Plagioctenium) subventricosus was named by Dall (1898). It is extant.

It was synonymized subjectively with Pecten (Plagioctenium) circularis by Jordan and Hertlein (1926); it was synonymized subjectively with Argopecten ventricosus by Coan et al. (2000).
Pecten compactus was named by Dall (1898). It is extant.

It was synonymized subjectively with Argopecten ventricosus by Coan et al. (2000).
Pecten newsomi was named by Arnold (1903). It is a 3D body fossil.

It was synonymized subjectively with Argopecten ventricosus by Coan et al. (2000).
Pecten fililextus was named by Li (1930). It is extant.

It was synonymized subjectively with Argopecten ventricosus by Coan et al. (2000).
Pecten (Pecten) compactus was named by Dall (1898). It is a 3D body fossil.

It was synonymized subjectively with Pecten (Plagioctenium) circularis by Jordan and Hertlein (1926).
Pecten (Plagioctenium) newsomi was named by Arnold (1903). It is a 3D body fossil.

It was synonymized subjectively with Pecten (Plagioctenium) circularis by Jordan and Hertlein (1926); it was synonymized subjectively with Argopecten ventricosus by Hendy (2021).
Pecten solidulus was named by Reeve (1853). It is extant.

It was synonymized subjectively with Pecten ventricosus by Coan et al. (2000).

Synonymy list

Year	Name and author
1835	Pecten circularis Sowerby
1842	Pecten ventricosus Sowerby
1846	Pecten inca d'Orbigny p. 663
1853	Pecten solidulus Reeve figs. pl. 33
1895	Pecten ventricosus Ashley p. 344
1898	Pecten (Pecten) compactus Dall p. 707 figs. pl. 34, fig. 5
1898	Pecten (Plagioctenium) subventricosus Dall p. 707
1898	Pecten compactus Dall p. 707
1898	Pecten (Plagioctenium) ventricosus Dall p. 710
1903	Pecten (Plagioctenium) newsomi Arnold p. 113 figs. pl. 11, figs. 1, 1a
1903	Pecten newsomi Arnold p. 113
1903	Pecten (Plagioctenium) subventricosus Arnold p. 114
1903	Pecten (Plagioctenium) ventricosus Arnold p. 114 figs. Plate XI, Fics. 3, 3a, 6 and 6a
1906	Pecten (Plagioctenium) circularis Arnold p. 125
1925	Pecten (Plagioctenium) calli Hertlein figs. pl. 4, figs. 5-7
1926	Pecten (Plagioctenium) calli Jordan and Hertlein p. 436
1926	Pecten (Plagioctenium) circularis Jordan and Hertlein p. 438
1927	Argopecten circularis Hodson and Hodson p. 25
1930	Pecten fililextus Li p. 255
1950	Aequipecten circularis Durham
1968	Chlamys (Argopecten) cricularis Hertlein
1984	Argopecten circularis Moore p. B34 figs. Plate 9, figures 7, 8
1984	Argopecten circularis calli Moore p. B35 figs. Plate 10, figure 2
2000	Argopecten ventricosus Coan et al. p. 234
2012	Argopecten ventricosus Coan and Valentich-Scott p. 284
2021	Argopecten ventricosus Hendy

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca
class	Bivalvia
—	Eubivalvia
subclass	Autobranchia	(Groblen 1894)
infraclass	Pteriomorphia	(Beurlen 1944)

Rank	Name	Author
—	Ostreomorphi	Ferussac 1822
—	Ostreioni	Ferussac 1822
—	Ostreata	Ferussac 1822
superorder	Ostreiformii	Ferussac 1822
order	Pectinida	(Gray 1854)
suborder	Pectinidina	(Adams and Adams 1858)
superfamily	Pectinoidea	Rafinesque 1815
—	Pectinoidae	Rafinesque 1815
family	Pectinidae	Wilkes 1810
genus	Argopecten	Monterosato 1889
species	ventricosus	(Sowerby 1842)

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.

Argopecten ventricosus Sowerby 1842

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†Pecten circularis caucanus Hodson and Hodson 1927

Invalid names: Pecten (Plagioctenium) calli Hertlein 1925 [synonym], Pecten (Plagioctenium) circularis Sowerby 1835 [synonym], Pecten (Plagioctenium) newsomi Arnold 1903 [synonym], Pecten (Plagioctenium) subventricosus Dall 1898 [synonym], Pecten compactus Dall 1898 [synonym], Pecten fililextus Li 1930 [synonym], Pecten inca d'Orbigny 1846 [synonym], Pecten newsomi Arnold 1903 [synonym], Pecten solidulus Reeve 1853 [synonym]

Diagnosis

Reference	Diagnosis
L. G. Hertlein 1925 (Pecten (Plagioctenium) calli)	Shell small, inequivalve. Right valve slightly arched, orna- mented by about 16 or 17 rather high, narrow, rounded, radi- ating ribs separated by interspaces of about the same width as the ribs; anterior ear with a large byssal notch and sculpture consisting of about five radiating riblets crossed by concentric lines of growth; posterior ear sculptured by radiating riblets crossed by concentric lines of growth. Left valve slightly prolonged posteriorly, much more highly arched than right, and sloping rather abruptly from the umbos, sculptured by about 19 well developed, rather sharp, rounded, radiating ribs separated by interspaces about as wide as the ribs, ribs and in- terspaces crossed by fine concentric lines ; ears slightly concave, the anterior with a small notch and ornamentation consisting of five or six radiating riblets crossed by concentric lines of growth; posterior ear slightly prolonged at the hinge line, sculptured as right. Altitude 24 mm. ; longitude 24 mm. ; diameter of left valve approximately 7 mm. ; apical angle ap- proximately 90°.