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Cylindrobullina ventricosa
Discussion
Diagnosis. Shell broadly oval with acute spire; last whorl evenly convex; subsutural ramp with spiral rib, ramp demarcated from whorl face by deep broad spiral furrow; whorls and base covered with 1522 spiral furrows; columellar and parietal lip are at a low angle to each other (not continuously arched).
Taxonomy
Cylindrobullina ventricosa was named by Gründel et al. (2011). Its type specimen is MG 1436 and is a 3D body fossil. Its type locality is Thorncombe Sands, Dorset, which is in a Margaritatus marine horizon in the Beacon Limestone Formation of the United Kingdom.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2011 | Cylindrobullina ventricosa Gründel et al. p. 501 figs. Text-fig. 16 A-H |
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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.
†Cylindrobullina ventricosa Gründel et al. 2011
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Diagnosis
No diagnoses are available