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Sivajiceras
Taxonomy
Sivajiceras is a genus. It is not extant. Its type is Perisphinctes congener. It is the type genus of Sivajiceratinae.
It was assigned to Proplanulitinae by Arkell et al. (1957); to Ammonoidea by Sepkoski (2002); and to Sivajiceratinae by Dutta and Bardhan (2016), Dutta et al. (2017).
It was assigned to Proplanulitinae by Arkell et al. (1957); to Ammonoidea by Sepkoski (2002); and to Sivajiceratinae by Dutta and Bardhan (2016), Dutta et al. (2017).
Synonymy list
| Year | Name and author |
|---|---|
| 1957 | Sivajiceras Arkell et al. p. L317 |
| 2002 | Sivajiceras Sepkoski |
| 2016 | Sivajiceras Dutta and Bardhan p. 25 |
| 2017 | Sivajiceras Dutta et al. p. 14 |
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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. †Sivajiceras
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†Sivajiceras congener Waagen 1875
†Sivajiceras paramorphum Waagen 1875
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Invalid names: Sivajiceras aureum Spath 1930 [synonym], Sivajiceras besairiei Collignon 1958 [synonym], Sivajiceras kleidos Spath 1931 [synonym], Sivajiceras robustum Spath 1931 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Middle Bathonian to the top of the Early/Lower Callovian or 168.20000 to 161.50000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Bathonian | Madagascar (Toamasina) | S. sp. (234065) | |
| Callovian | India | S. sp. (68672) | |
| Early/Lower Callovian | Madagascar | S. magnumbilicatum, S. perrobustum, S. aureum, S. robustum, S. besairiei, S. congener (98091) S. paramorphum (98094) S. perrobustum (98126) | |
| Early/Lower Callovian | Madagascar (Toamasina) | S. besairiei (234100) | |
| Early/Lower Callovian | India (Gujarat) | S. paramorphum (167362 167388 189089) | |
| Middle Callovian | Madagascar | S. kleidos, S. besairiei (98092) S. sp. (98157 98173 98179) | |
| Middle Callovian | Madagascar (Menabe) | Kinkeliniceras crassiplanula (234128) |