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Opalia (Nodiscala)

Gastropoda - Epitoniidae

Taxonomy
Nodiscala was named by De Boury (1890) [Sepkoski's age data: T Eo R]. It is extant.

It was reranked as Opalia (Nodiscala) by Durham (1937) and Todd (2001); it was reranked as Scalina (Nodiscala) by Gardner (1947).

It was assigned to Scalina by Gardner (1947); to Opalia by Durham (1937) and Todd (2001); and to Neotaenioglossa by Sepkoski (2002).

Synonyms
Synonymy list
YearName and author
1890Nodiscala De Boury p. 12
1891Funiscala de Boury
1937Opalia (Nodiscala) Durham p. 504
1947Scalina (Nodiscala) Gardner p. 578
1990Funiscala Beu et al. p. 411
1995Opalia (Funiscala) Pacaud and Le Renard
2001Opalia (Nodiscala) Todd
2002Funiscala Sepkoski, Jr.
2002Nodiscala Sepkoski, Jr.

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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
subgenusNodiscala(De Boury 1890)

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 small, slender, non-umbilicate; axial ribs nodose, ill-defined; occasional varices present representing resting stages, the last one very prominent; spiral ribs present, distinct; on last whorl there are two angulations, the lowest representing the keel bounding basal disk; interspaces between spiral ribs strongly punctate; aperture ovate, outer lip much thickened by terminal varix, inner lip moderately thick. Abundant in warm seas, usually in depths of less than 100 fathoms.