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Cylindrobullina
Taxonomy
Cylindrobullina was named by von Ammon (1878) [Sepkoski's age data: Tr Olen-l J Bath Sepkoski's reference number: 558,785].
It was assigned to Gastropoda by von Ammon (1878); to Cephalaspida by Sepkoski (2002); and to Cylindrobullinidae by Kaim et al. (2006) and Gründel and Nützel (2012).
It was assigned to Gastropoda by von Ammon (1878); to Cephalaspida by Sepkoski (2002); and to Cylindrobullinidae by Kaim et al. (2006) and Gründel and Nützel (2012).
Species
C. (Cylindrobullina), C. attenuata, C. avena, C. avenoides, C. blakei, C. bleicheri, C. buvigineri, C. buvignieri, C. carburgensis, C. cinerea, C. convexa, C. davidsoni, C. dorsetensis, C. fasciata, C. ferrea, C. fragilis, C. kirklingtonensis, C. kirlingtonensis, C. obesa, C. ovalis, C. pseudmoorei, C. scalaris, C. schneideri, C. secale, C. valanginiana, C. ventricosa
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1878 | Cylindrobullina von Ammon |
| 2002 | Cylindrobullina Sepkoski |
| 2006 | Cylindrobullina Kaim et al. p. 479 |
| 2012 | Cylindrobullina Gründel and Nützel p. 35 |
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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.
G. †Cylindrobullina von Ammon 1878
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Subg. †Cylindrobullina (Cylindrobullina) von Ammon 1878
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†Cylindrobullina (Cylindrobullina) avenoides Haas 1953
†Cylindrobullina (Cylindrobullina) obesa Haas 1953
†Cylindrobullina (Cylindrobullina) vespertina Haas 1953
†Cylindrobullina attenuata Lycett 1850
†Cylindrobullina avena Terquem 1855
†Cylindrobullina avenoides Haas 1953
†Cylindrobullina blakei Cox and Arkell 1950
†Cylindrobullina bleicheri Cossmann 1895
†Cylindrobullina buvigineri Terquem 1855
†Cylindrobullina buvignieri Loriol and Pellat 1866
†Cylindrobullina carburgensis Lycett 1863
†Cylindrobullina cinerea Hudleston 1882
†Cylindrobullina convexa Batten and Stokes 1986
†Cylindrobullina davidsoni Loriol and Pellat 1874
†Cylindrobullina dorsetensis Gründel et al. 2011
†Cylindrobullina fasciata Lycett 1863
†Cylindrobullina ferrea Wilson 1887
†Cylindrobullina fragilis Dunker 1846
†Cylindrobullina kirklingtonensis Lycett 1863
†Cylindrobullina kirlingtonensis Lycett 1863
†Cylindrobullina obesa Haas 1953
†Cylindrobullina ovalis Greppin 1888
†Cylindrobullina pseudmoorei Gründel and Buchholz 1999
†Cylindrobullina scalaris Dumortier 1864
†Cylindrobullina schneideri Gründel 1997
†Cylindrobullina secale Terquem 1855
†Cylindrobullina valanginiana Kaim 2004
†Cylindrobullina ventricosa Gründel et al. 2011
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Gründel and A. Nützel 2012 | The shell has cylindrical shape. The whorls embrace just below the subsutural ramp. The aperture is high and narrow (mostly ¾ or more of total shell height). The spire is low. The whorls have a subsutural ramp with a rounded edge as transition to the almost straight flanks. A spiral furrow below the ramp is lacking or very weak. The base is convex and has an evenly rounded transition to the whorl flanks. The whorls are smooth or weakly ornamented with strengthened growth lines, spiral striae or spiral threads on the base. The growth lines run weakly prosocyrt on the whorl flanks and the base. They run opisthocline and opisthocyrt on the ramp. The aperture is very high and narrow. It is especially narrow in its adapical part and somewhat broadened and rounded abapically. The outer lip is straight; the columellar lip is commonly somewhat broadened. There are no columellar folds. The protoconch (though unknown from the type species) is heterostrophic. |