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Opalia (Rugatiscala)

Gastropoda - Epitoniidae

Taxonomy
Rugatiscala was named by de Boury (1913) [Sepkoski's age data: T Eo-l T Mi-m Sepkoski's reference number: 854].

It was reranked as Turriscala (Rugatiscala) by Glibert (1962); it was reranked as Pliciscala (Rugatiscala) by Jeffery and Tracey (1997); it was reranked as Opalia (Rugatiscala) by Durham (1937), Addicott (1970) and Beu (2011).

It was assigned to Turriscala by Glibert (1962); to Epitoniinae by Pacaud and Le Renard (1995); to Epitoniidae by Garvie (1996); to Pliciscala by Jeffery and Tracey (1997); to Neotaenioglossa by Sepkoski (2002); and to Opalia by Durham (1937), Addicott (1970) and Beu (2011).

Synonymy list
YearName and author
1913Rugatiscala de Boury
1937Opalia (Rugatiscala) Durham p. 505
1962Turriscala (Rugatiscala) Glibert p. 238
1970Opalia (Rugatiscala) Addicott p. 57
1995Rugatiscala Pacaud and Le Renard
1996Rugatiscala Garvie p. 65
1997Pliciscala (Rugatiscala) Jeffery and Tracey p. 95
2002Rugatiscala Sepkoski, Jr.
2011Opalia (Rugatiscala) Beu p. 19

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
Ptenoglossa(Gray 1853)
superfamilyEpitonioidea(Berry 1910)
familyEpitoniidaeBerry 1910
genusOpaliaAdams and Adams 1853
subgenusRugatiscala(de Boury 1913)

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.

Diagnosis
ReferenceDiagnosis
J. W. Durham 1937Shell slightly heavy, usually small; spire high; whorls convex, sutures deep; heavy axial ribs, sometimes slightly sinuous; spiral ribs of moderate size crossing axial ribs, interspaces not punctate; basal disk thick with a prominent keel, covered by fine spiral ribs; no um- bilicus; aperture ovate, no auricle, outer fip thickened, inner lip thin; occasionally irregular varices are present.
C. L. Garvie 1996"Testa solida, imperforata, eleongoturrita, costis longitudinalibus crassis et fimiculis transversis incrassatis ornati. Sutura mediocriter profunda. Anfractibus convexi, costis longitundinalibus crassis funiculis incrassads impressi et nullo modo punctati. Ult anfra. spira minor, disco praditus. Apertura subrotunda. Peritoma duples. Internum continuum crassiusculum, vix prominulum, nitidum. Externum, postice interruptum, crassum et altcma varice costitutum."

(Shell solid, not umbilicated; whorls inflated with bent axial ribs and (non-punctate) spiral lines; suture impressed. Basal disc concave, weakly spirally striate. Aperture oval, outer lip duplex.)