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Olenekoceras
Taxonomy
Olenekoceras is a genus. It is not extant.
It was assigned to Keyserlingitidae by Dagis et al. (1996); to Ceratitida by Sepkoski (2002); and to Sibiritidae by Brayard et al. (2009).
It was assigned to Keyserlingitidae by Dagis et al. (1996); to Ceratitida by Sepkoski (2002); and to Sibiritidae by Brayard et al. (2009).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1996 | Olenekoceras Dagis et al. p. 112 |
| 2002 | Olenekoceras Sepkoski |
| 2009 | Olenekoceras Brayard et al. pp. Appendix 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.
G. †Olenekoceras
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†Olenekoceras laevigatum Dagys and Ermakova 1986
†Olenekoceras middendorffi Keyserling 1845
†Olenekoceras nikitini Mojsisovics 1888
†Olenekoceras schrenki Mojsisovics 1886
†Olenekoceras tebenkovi Zharnikova 1985
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 29 | 29.6 | 12.6 | 86.0 | 28.5 | 16.5 | |
| shell diameter | 29 | 80.0 | 35.0 | 200.0 | 77.2 | 41.9 | |
| shell inflation | 29 | 26.5 | 9.80 | 88.0 | 26.8 | 16.5 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Olenekian or 251.20000 to 247.20000 Ma
Collections (42 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Spathian | Japan | Keyserlingites middendorffi (107621) | |
| Spathian | Russian Federation (Primorye) | O. meridianus (47314) O. sp. (47254 47294 47310) | |
| Spathian | Russian Federation | Ceratites schrenki (212505) Keyserlingites middendorffi (123495 127745 214730) Keyserlingites tebenkovi (151082) O. laevigatum (107195 123546 123547) O. laevigatum, O. middendorffi (107019 107022) O. middendorffi (107211 123386 123508 123509 123545) O. middendorffi, O. nikitini (97058 107190 123385 123387) O. middendorffi, O. nikitini, O. schrenki (123505) O. middendorfi, O. nikitini, O. schrenki (107049) O. tebenkovi (168040) | |
| Olenekian | Russian Federation (Siberia) | O. middendorffi (72344 72345 72346 72349 72350 72351 72354 72355 72357 72358 72359 72364) O. sp. (72342) | |
| Olenekian | Russian Federation | O. laevigatum (124542) O. sp. (124541) |