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Aulacostephanus (Pararasenia) quenstedti
Taxonomy
Aulacostephanus quenstedti was named by Durand (1933).
It was recombined as Aulacostephanus (Pararasenia) quenstedti by Mesezhnikov (1984).
It was recombined as Aulacostephanus (Pararasenia) quenstedti by Mesezhnikov (1984).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1933 | Aulacostephanus quenstedti Durand p. 207 figs. Pl 20, fig 1 |
| 1984 | Aulacostephanus (Pararasenia) quenstedti Mesezhnikov p. 134 figs. Pl 27, fig 1; text-fig 52 |
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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.
†Aulacostephanus (Pararasenia) quenstedti Durand 1933
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 53.4 | 46.1 | 61.9 | 54.0 | 11.2 | |
| shell diameter | 2 | 152.6 | 128.0 | 182.0 | 155.0 | 38.2 | |
| shell inflation | 2 | 46.3 | 29.4 | 72.8 | 51.1 | 30.7 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Late/Upper Kimmeridgian or 155.70000 to 150.80000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Kimmeridgian | Russian Federation (Khanty-Mansi Autonomous Okrug) | Aulacostephanus quenstedti (58778 58779 58781 58782 164311) |