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Viligella rotunda
Taxonomy
Mentzelia rotunda was named by Tuchkov (1956). Its type specimen is TsGM 8126/2 and is a 3D body fossil. Its type locality is Viliga River basin, Okhotsk, which is in a Rhaetian marine horizon in the Russian Federation.
It was recombined as Viligella rotunda by Dagys (1965), Dagys (1974) and Bychkov et al. (1976).
It was recombined as Viligella rotunda by Dagys (1965), Dagys (1974) and Bychkov et al. (1976).
Synonymy list
| Year | Name and author |
|---|---|
| 1956 | Mentzelia rotunda Tuchkov p. 180 figs. Pl 1, figs 1,2 |
| 1965 | Viligella rotunda Dagys p. 117 figs. Pl 23, figs 1-4 |
| 1974 | Viligella rotunda Dagys p. 124 figs. Pl 36, figs 1-3; text-fig 84 |
| 1976 | Viligella rotunda Bychkov et al. |
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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.
†Viligella rotunda Tuchkov 1956
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 14.9 | 12.3 | 18.0 | 15.2 | 4.03 | |
| valve height | 2 | 13.5 | 13.5 | 13.5 | 13.5 | - |
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||