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Gyronautilus
Taxonomy
Gyronautilus was named by Zakharov and Shigeta (2000). It is not extant. Its type is Syringoceras praevolutum.
It was assigned to Gyronautilinae by Zakharov and Shigeta (2000).
It was assigned to Gyronautilinae by Zakharov and Shigeta (2000).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2000 | Gyronautilus Zakharov and Shigeta p. 232 |
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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.
G. †Gyronautilus Zakharov and Shigeta 2000
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†Gyronautilus popovi Shigeta and Zakharov 2009
†Gyronautilus praevolutus Kiparisova 1961
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 4 | 25.7 | 8.40 | 54.0 | 32.4 | 20.1 | |
| shell diameter | 4 | 58.0 | 17.4 | 135.0 | 72.3 | 50.8 | |
| shell inflation | 4 | 18.1 | 4.80 | 48.0 | 23.1 | 19.0 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Griesbachian to the top of the Smithian or 251.90200 to 248.10000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Griesbachian | Russian Federation | G. popovi (90205) G. praevolutus (90207) | |
| Smithian | Russian Federation (Primorye) | G. praevolutum (47267) | |
| Olenekian | Russian Federation | G. praevolutum (61959) |