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Discophiceras
Taxonomy
Ophiceras (Discophiceras) was named by Spath (1935) [Sepkoski's age data: Tr Indu-l Tr Indu-u Sepkoski's reference number: 302].
It was reranked as Discophiceras by Tozer (1981), Tozer (1994), Sepkoski (2002) and Zhang et al. (2017).
It was assigned to Ophiceras by Spath (1935); to Ophioceratidae by Tozer (1981); to Ceratitida by Sepkoski (2002); and to Ophiceratidae by Tozer (1994) and Zhang et al. (2017).
It was reranked as Discophiceras by Tozer (1981), Tozer (1994), Sepkoski (2002) and Zhang et al. (2017).
It was assigned to Ophiceras by Spath (1935); to Ophioceratidae by Tozer (1981); to Ceratitida by Sepkoski (2002); and to Ophiceratidae by Tozer (1994) and Zhang et al. (2017).
Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Ophiceras (Discophiceras) Spath p. 30 |
| 1981 | Discophiceras Tozer p. 89 |
| 1994 | Discophiceras Tozer p. 57 |
| 2002 | Discophiceras Sepkoski |
| 2017 | Discophiceras Zhang et al. p. 655 |
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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. †Discophiceras Spath 1935
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†Discophiceras wordiei Spath 1930
†Ophiceras (Discophiceras) compressum Spath 1935
†Ophiceras (Discophiceras) kochi Spath 1930
†Ophiceras (Discophiceras) subkyokticum Spath 1930
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 10 | 36.5 | - | - | 36.5 | - | |
| shell diameter | 10 | 58.0 | 22.0 | 104.0 | 74.5 | 30.8 | |
| shell inflation | 10 | 21.9 | - | - | 21.9 | - |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Griesbachian or 251.90200 to 250.50000 Ma
Collections (44 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Griesbachian | Canada (Nunavut) | D. wordiei (47923 47965) | |
| Griesbachian | China (Xizang) | D. wordiei (189586) | |
| Griesbachian | Svalbard and Jan Mayen | Ophiceras kochi, Ophiceras compressum (212072) | |
| Griesbachian | Australia (Western Australia) | D. wordiei (48611) | |
| Griesbachian | Thailand | Ophiceras subkyokticum (97003) | |
| Griesbachian | USA (Montana) | Ophiceras subkyokticum (203172) | |
| Griesbachian | Greenland | D. wordiei (48046 48048 48059 48114 48121 48122) D. wordiei, D. kochi (112739) D. wordiei, D. kochi, D. subkyokticum (112746 112751 112758) D. wordiei, D. subkyokticum (112729) D. wordiei, Ophiceras kochi (48113) Ophiceras compressum (48037 118558 118691) Ophiceras compressum, Ophiceras wordiei (118683) Ophiceras compressum, Ophiceras wordiei, Ophiceras subkyokticum (118618) Ophiceras kochi, Ophiceras compressum (118524 118731) Ophiceras kochi, Ophiceras compressum, Ophiceras wordiei, Ophiceras subkyokticum (118617) Ophiceras kochi, Ophiceras wordiei (118525) Ophiceras subkyokticum (118638 118653) Ophiceras wordiei (118552 118651 118661 118702 118710 118753 118768) Ophiceras wordiei, Ophiceras compressum (118509) Ophiceras wordiei, Ophiceras subkyokticum (118578 118663 118746 118747) | |
| Griesbachian | Oman | D. sp. (44804 214532) |