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Cylindrobullina dorsetensis
Discussion
Diagnosis. Shell slender conical, with acute spire and slightly convex whorls; oblique subsutural ramp demarcated by spiral furrow, without edge; a second spiral furrow is present on the ramp; weaker spiral furrows cover whorls and base; these furrows are separated by wide interspaces.
Taxonomy
Cylindrobullina dorsetensis was named by Gründel et al. (2011). Its type specimen is MG 1434 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 dorsetensis Gründel et al. p. 500 figs. Text-fi. 14A-E |
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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 dorsetensis Gründel et al. 2011
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 4.67 | 4.20 | 5.20 | 4.70 | 0.707 |
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| Source: superf = superfamily, c = class | |||||
| References: Kiessling 2004, Hendy et al. 2009 | |||||
Age range: Margaritatus or 189.60000 to 183.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Margaritatus | United Kingdom | Cylindrobullina dorsetensis (118048 type locality: 118051) |