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Nordophiceras
Taxonomy
Nordophiceras was named by Popov (1961) [Sepkoski's age data: Tr Olen-u Sepkoski's reference number: 302]. It is not extant. It is the type genus of Nordophiceratidae.
It was assigned to Ophiceratidae by Tozer (1981); to Meekoceratidae by Kummel (1969), Dagis et al. (1996); to Ceratitida by Sepkoski (2002); and to Nordophiceratidae by Brayard et al. (2009).
It was assigned to Ophiceratidae by Tozer (1981); to Meekoceratidae by Kummel (1969), Dagis et al. (1996); to Ceratitida by Sepkoski (2002); and to Nordophiceratidae by Brayard et al. (2009).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1961 | Nordophiceras Popov |
| 1963 | Arctotirolites Popov |
| 1969 | Arctotirolites Kummel |
| 1969 | Nordophiceras Kummel |
| 1981 | Arctotirolites Tozer p. 88 |
| 1981 | Nordophiceras Tozer p. 89 |
| 1996 | Nordophiceras Dagis et al. p. 96 |
| 2002 | Arctotirolites Sepkoski |
| 2002 | Nordophiceras Sepkoski |
| 2009 | Nordophiceras 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. †Nordophiceras Popov 1961
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†Nordophiceras chaoxianense Guo 1982
†Nordophiceras compressum Chao 1959
†Nordophiceras contrarium Popov 1962
†Nordophiceras karpinskii Mojsisovics 1886
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Invalid names: Arctoceras simplex Popov 1961 [synonym], Nordophiceras olenekensis Popov 1961 [synonym], Nordophiceras pseudosimplex Kummel 1969 [synonym]
†Nordophiceras kazakovi Dagis and Ermakova 1988
†Nordophiceras menense Popov 1962
†Nordophiceras planorbis Waagen 1895
†Nordophiceras popovi Zakharov 1978
†Nordophiceras schmidti Mojsisovics 1886
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Invalid names: Gyronites mojsisovicsi Waagen 1895 [synonym], Xenodiscus dentosus Mojsisovics 1886 [synonym]
Invalid names: Arctotirolites Popov 1963 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 36 | 18.0 | 10.0 | 35.4 | 17.2 | 6.44 | |
| shell diameter | 36 | 46.0 | 23.0 | 105.0 | 47.5 | 18.1 | |
| shell inflation | 36 | 14.0 | 7.00 | 47.0 | 13.5 | 7.92 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004, Hendy et al. 2009 | |||||
Collections (48 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Smithian | Pakistan | N. planorbe (102331) | |
| Olenekian | Russian Federation (Siberia) | N. popovi (72346 72359) N. schmidti (72347 72348 72349 72350 72352 72354 72356 72357 72360 72362) N. schmidti, N. popovi (72363) N. sp. (72342) | |
| Olenekian | Russian Federation | N. contrarium (124536) N. schmidti (124541) | |
| Spathian | Pakistan | Lecanites planorbis (143839) | |
| Spathian | China (Guangxi) | Submeekoceras compressum (44005) | |
| Spathian | Russian Federation (Primorye) | N. sp. (47278) | |
| Spathian | China (Anhui) | N. chaoxianense (150818) | |
| Spathian | Russian Federation | N. contrarium (99912 99913 107018 107106 107185 107199 123382 123388 123389 123390 123391) N. karpinskii (97058 123386 214752) N. karpinskii, N. schmidti (107049 123385 123387) N. kazakovi (107019 107195 123392) N. menense (123496) N. schmidti (107211 123494 214753) N. schmidti, Karangatites popovi (123495) Xenodiscus karpinskii, Xenodiscus dentosus (212505) Xenodiscus schmidti (212541) |