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Sigmoidella lisbonensis
Taxonomy
Sigmoidella lisbonensis was named by Bandy (1949).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1949 | Sigmoidella lisbonensis Bandy p. 66 |
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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.
†Sigmoidella lisbonensis Bandy 1949
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| O. L. Bandy 1949 | Test compressed, ovate in end view, broadly rounded at base, apertural end pointed; edge angular to subangular with a rather blunt keel on most chambers; chambers somewhat compressed arranged in clockwise sigmoid series, each succeeding chamber embracing the earlier one, the later two chambers in adults not extending down to the initial end; sutures slightly depressed, bordered by the raised keel of the adjacent chamber on the lower side; wall smooth, finely perforate; aperture radiate, terminal, round. Length, 0.89 mm. ; breadth, 0.53 mm. ; thickness, 0.26 mm. |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||
Collections
No collection or age range data are available