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Amaea (Undiscala)
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), Eames (1952); it was reranked as Amaea (Undiscala) by Glibert (1962).
It was assigned to Acrilla by Durham (1937), Durham (1944), Eames (1952); to Amaea by Glibert (1962); and to Neotaenioglossa by Sepkoski (2002).
It was reranked as Acrilla (Undiscala) by Durham (1937), Durham (1944), Eames (1952); it was reranked as Amaea (Undiscala) by Glibert (1962).
It was assigned to Acrilla by Durham (1937), Durham (1944), Eames (1952); to Amaea by Glibert (1962); and to Neotaenioglossa by Sepkoski (2002).
Subtaxa
Species lacking formal opinion data
Amaea brevicula, Amaea bronni, Amaea decussata, Amaea delongchampsi, Amaea dickersoni, Amaea dupiniana, Amaea geniculata, Amaea grignonensis, Amaea hassani, Amaea macula, Amaea macula, Amaea macula, Amaea newtoni, Amaea niasensis, Amaea paleocaenica, Amaea perangusta, Amaea sculptata, Amaea subreticula, Amaea subreticulata, Amaea suroclathrata, Amaea texana, Amaea texana, Amaea thielei, Amaea triplicata, Amaea triplicata, Undiscala goryi, Undiscala vicina
Synonymy list
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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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†Acrilla (Undiscala) lolakensis Durham 1937
†Acrilla (Undiscala) olympicensis Durham 1937
†Acrilla (Undiscala) soriensis Eames 1952
†Acrilla (Undiscala) washingtonensis Weaver 1916
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. W. Durham 1937 | Shell 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. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Beu et al. 1990, Kiessling 2004 | |||||
Age range: base of the Late/Upper Campanian to the top of the Late/Upper Oligocene or 83.60000 to 23.04000 Ma
Collections (23 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian | Israel | Undiscala goryi (80990 80998) Undiscala sp. (80982) Undiscala vicina (80980 80986 80987 80988 80989 80993 80995 80996 80997) | |
| Danian | USA (California) | Cerithiopsis alternata (190798) | |
| Selandian | USA (California) | Acrilla sp. (90071) | |
| Bartonian | Pakistan | Acrilla soriensis (183853) | |
| Bartonian | USA (Washington) | Epitonium washingtonensis (200105) | |
| Rupelian | USA (Washington) | Acrilla olympicensis (62246) | |
| Chattian | USA (Washington) | Acrilla olympicensis (52357 52362 180405 208172) Epitonium washingtonensis, Acrilla washingtonensis (52380) | |
| Late/Upper Oligocene | USA (Washington) | Acrilla olympicensis (40737) |