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Amaea (Undiscala)

Gastropoda - Epitoniidae

Taxonomy
Undiscala was named by de Boury (1909) [Sepkoski's age data: T Eo-u T Mi].

It was reranked as Acrilla (Undiscala) by Durham (1937), Durham (1944) and Eames (1952); it was reranked as Amaea (Undiscala) by Glibert (1962).

It was assigned to Acrilla by Durham (1937), Durham (1944) and Eames (1952); to Amaea by Glibert (1962); and to Neotaenioglossa by Sepkoski (2002).

Synonymy list
YearName and author
1909Undiscala de Boury
1937Acrilla (Undiscala) Durham p. 509
1944Acrilla (Undiscala) Durham p. 159
1952Acrilla (Undiscala) Eames p. 53
1962Amaea (Undiscala) Glibert p. 247
2002Undiscala Sepkoski

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassCaenogastropoda(Cox 1959)
superfamilyEpitonioidea(Berry 1910)
familyEpitoniidaeBerry 1910
genusAmaeaAdams and Adams 1853
subgenusUndiscala(de Boury 1909)

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.

Subg. †Amaea (Undiscala) de Boury 1909
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Diagnosis
ReferenceDiagnosis
J. W. Durham 1937Shell solid, medium size; sutures mod- erately deep, whorls convex; numerous non-lamellar axial ribs; spiral ribs about as prominent as axial ribs; basal disk marked by closely spaced spiral ribs; bounded by peripheral keel; aperture nearly round; outer lip usually not thickened, not sinuous, inner lip very thin.