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Aulacostephanus (Pararasenia) pischmae
Taxonomy
Aulacostephanus pischmae was named by Khudyaev (1932).
It was recombined as Aulacostephanus (Pararasenia) pischmae by Mesezhnikov (1984).
It was recombined as Aulacostephanus (Pararasenia) pischmae by Mesezhnikov (1984).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1932 | Aulacostephanus pischmae Khudyaev p. 646 figs. Pl 1, fig 1 |
| 1984 | Aulacostephanus (Pararasenia) pischmae Mesezhnikov p. 133 figs. Pl 31, fig 4; pl 45, fig 2 |
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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) pischmae Khudyaev 1932
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 46.5 | 33.7 | 65.7 | 45.4 | 16.2 | |
| shell diameter | 3 | 129.2 | 99.0 | 173.0 | 126.0 | 37.4 | |
| shell inflation | 3 | 55.5 | 39.6 | 74.4 | 58.0 | 17.4 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Late/Upper Kimmeridgian or 152.21000 to 149.20000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Kimmeridgian | Russian Federation (Komi) | Aulacostephanus pischmae (164320) |