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Argobuccinum casus

Gastropoda - Ranellidae

Taxonomy
Argobuccinum casus was named by Kensley and Pether (1986). Its type specimen is SAM-PQ-A V523, a shell, and it is a 3D body fossil.

Sister species lacking formal opinion data

Synonymy list
YearName and author
1986Argobuccinum casus Kensley and Pether p. 166 figs. figs. 14, 15

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classGastropoda
RankNameAuthor
subclassCaenogastropoda(Cox 1959)
Sorbeoconcha(Ponder and Lindberg 1997)
Hypsogastropoda(Ponder and Lindberg 1997)
superorderLatrogastropodaRiedel 2000
superfamilyTonnoidea(Suter 1913)
familyRanellidaeGray 1854
genusArgobuccinumBruguière 1792
speciescasus

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.

Argobuccinum casus Kensley and Pether 1986
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Diagnosis
ReferenceDiagnosis
B. Kensley and J. Pether 1986Shell high-spired, very slightly dorso-ventrally compressed, with at least 5 postnatal whorls bearing a total of about 6 varices, latter not continuous from whorl to whorl. Profile of whorls evenly convex. Shell somewhat variable with regard to degree of elongation; few squatter specimens resembling Argobuccinum pustulosum (Lightfoot, 1786) in general proportions. Siphonal canal less than half length of aperture, slightly flexed to left. Outer lip with 11 or 12 ridges, becoming paired in older specimens. Columella smooth. Postnatal sculpture consisting of strong flattened spiral ridges or ribbons with narrow intervening grooves, 7 or 8 on earlier whorls, 13 to 15 on body whorl with finer alternating ridges appearing. Spiral ribbons becoming worn on body whorl, and seen to consist of 2 high ridges connected and covered by outer shell layer. Spiral ridges running on to dorsum of siphonal canal. Very faint rounded axial ridges seen in two specimens, 7 ridges between varices, becoming obsolete on body whorl.
Measurements
No measurements are available
Composition: aragonitec
Locomotion: actively mobilef
Life habit: epifaunalf
Diet: carnivoref
Vision: limitedc
Created: 2009-09-10 07:59:47
Modified: 2009-09-10 09:59:47
Source: f = family, c = class
References: Kiessling 2004, Hendy et al. 2009

Age range: Late/Upper Pliocene or 3.60000 to 2.58800 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Pliocene3.6 - 2.588South Africa (Western Cape) Argobuccinum casus (118306 118317 118318)