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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Sieberella problematica
Taxonomy
Pentamerus problematicus was named by Barrande (1847).
It was recombined as Sieberella problematica by Johnson (1970).
It was recombined as Sieberella problematica by Johnson (1970).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1847 | Pentamerus problematicus Barrande p. 470 figs. Pl. 17, fig. 15. |
| 1970 | Sieberella problematica Johnson p. 96 figs. Pl. 13, figs. 1-5 |
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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.
†Sieberella problematica Barrande 1847
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||