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Argobuccinum

Gastropoda - Ranellidae

Taxonomy

Argobuccinum was named by Bruguière (1792) [Sepkoski's age data: T Than R]. It is extant.

It was reranked as Ranella (Argobuccinum) by Boettger (1901).

It was assigned to Ranella by Boettger (1901); to Cymatiidae by Durham (1944), Hickman (1980) and Kensley and Pether (1986); to Ranellinae by Wilson (1993); to Neotaenioglossa by Sepkoski (2002); and to Ranellidae by Beu (2010).

Species

A. (Argobuccinum), A. arnoldi, A. casus, A. mediocre (syn. Gyrineum lewisii), A. pustulosum (syn. A. argus, A. vexillum), A. scotiaensis, A. tejonensis, Mediargo dilleri, Mediargo mathewsoni

Species lacking formal opinion data

A. ranelliforme, A. wimani

Synonyms

Mediargo was named by Terry (1968) [Sepkoski's age data: T Ol-u R]. It is extant. Its type is Gyrineum mediocre.

It was synonymized subjectively with Argobuccinum by Beu (2010).

It was assigned to Cymatiidae by Terry (1968) and Addicott (1970); and to Neotaenioglossa by Sepkoski (2002).
Gondwanula was named by Finlay (1926). It is extant.

It was synonymized subjectively with Argobuccinum by Beu (2010).

Synonymy list

Year	Name and author
1792	Argobuccinum Bruguière
1901	Ranella (Argobuccinum) Boettger p. 21
1926	Gondwanula Finlay p. 399
1944	Argobuccinum Durham p. 167
1968	Mediargo Terry p. 42 figs. Plate 4
1970	Mediargo Addicott p. 72
1980	Argobuccinum Hickman p. 45
1986	Argobuccinum Kensley and Pether p. 166
1993	Argobuccinum Wilson p. 241
2002	Argobuccinum Sepkoski
2002	Mediargo Sepkoski
2010	Argobuccinum Beu

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

Rank	Name	Author
subclass	Caenogastropoda	(Cox 1959)
—	Sorbeoconcha	(Ponder and Lindberg 1997)
—	Hypsogastropoda	(Ponder and Lindberg 1997)
superorder	Latrogastropoda	Riedel 2000
superfamily	Tonnoidea	(Suter 1913)
family	Ranellidae	Gray 1854
genus	Argobuccinum	Bruguière 1792

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. Argobuccinum Bruguière 1792

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Subg. Argobuccinum (Argobuccinum) Bruguiére 1792

†Argobuccinum arnoldi Martin 1914

†Argobuccinum casus Kensley and Pether 1986

†Argobuccinum mediocre Dall 1909

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Invalid names: Gyrineum lewisii Carson 1926 [synonym]

Argobuccinum pustulosum Solander and Lightfoot 1786

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Invalid names: Argobuccinum argus Gmelin 1791 [synonym], Argobuccinum vexillum Sowerby 1835 [synonym]

†Argobuccinum scotiaensis Martin 1914

†Argobuccinum tejonensis Gabb 1869

Invalid names: Gondwanula Finlay 1926 [synonym], Mediargo Terry 1968 [synonym]

Diagnosis

Reference	Diagnosis
J. S. Terry 1968 (Mediargo)	Diagnostic generic characters that are seen in all butthe largest gerontic specimens include the following: twonearly continuous lateral varices on each volution, highspire, rounded whorls having tabulate shoulders, moderate to long anterior canal, anal notch oriented at anangle to the axis of coiling (as in Fusitriton, in contrastto the apically directed notch in Argobuccinum), transverse pillar folds over most of the columella, and a denticulate or plicate outer lip. Axial and spiral costae maybe marked or obsolete and are commonly present onjuvenile whorls but conspicuously lacking in the laterstages. Mediargo differs from Argobuccinum in its tabularwhorls and anal notch, from Fusitriton in its lateralvarices and plicate aperture, and from Gyrineum in itsoutline, tabulate shoulders, ovate aperture, marked analnotch, and large size.