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Metalegoceras rotundatum
Taxonomy
Metalegoceras rotundatum was named by Ruzhentsev (1956). Its type specimen is PIN 317/3241 and is a 3D body fossil. Its type locality is Aktasty River, locality 10, Aktyubinsk Region, which is in an Artinskian carbonate limestone in the Aktasty Formation of Kazakhstan.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1956 | Metalegoceras rotundatum Ruzhentsev p. 129 figs. Pl 6, fig 6 |
| 2002 | Metalegoceras rotundatum Leonova |
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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.
†Metalegoceras rotundatum Ruzhentsev 1956
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 6.69 | 5.20 | 8.60 | 6.90 | 2.40 | |
| shell diameter | 2 | 23.4 | 18.3 | 30.0 | 24.1 | 8.27 | |
| shell inflation | 2 | 11.5 | 9.30 | 14.3 | 11.8 | 3.54 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Artinskian or 290.10000 to 283.30000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | Kazakhstan | Metalegoceras rotundatum (type locality: 125114) |