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Pterosirenites nelgehensis
Taxonomy
Sirenites nelgehensis was named by Arkhipov (1974).
It was recombined as Argosirenites nelgehensis by Bychkov et al. (1976), Korchinskaya (1980); it was recombined as Pterosirenites nelgehensis by Shevyrev (1990).
It was recombined as Argosirenites nelgehensis by Bychkov et al. (1976), Korchinskaya (1980); it was recombined as Pterosirenites nelgehensis by Shevyrev (1990).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Sirenites nelgehensis Arkhipov p. 246 figs. Pl 15, figs 6,7 |
| 1976 | Argosirenites nelgehensis Bychkov et al. |
| 1980 | Argosirenites nelgehensis Korchinskaya p. 32 figs. Pl 1, figs 1-5; pl 2, fig 1 |
| 1990 | Pterosirenites nelgehensis Shevyrev p. 104 |
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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.
†Pterosirenites nelgehensis Arkhipov 1974
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 6 | 23.9 | 12.0 | 32.0 | 31.0 | 8.73 | |
| shell diameter | 6 | 39.8 | 24.0 | 54.5 | 44.5 | 13.4 | |
| shell inflation | 6 | 4.99 | 4.50 | 5.50 | 5.00 | 0.408 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Lacian or 227.30000 to 215.38000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lacian | Svalbard and Jan Mayen | Argosirenites nelgehensis (151217 151218) | |
| Lacian | Russian Federation | Argosirenites nelgehensis (214804 214807) |