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Parametacoceras
Taxonomy
Parametacoceras was named by Miller and Owen (1934) [Sepkoski's age data: C Step-l C Step-u Sepkoski's reference number: 524].
It was assigned to Tainoceratidae by Hoare (1961) and Teichert et al. (1964); to Nautilida by Sepkoski (2002); and to Gzheloceratidae by Shimanskiy (1967) and Laptikhovsky et al. (2013).
It was assigned to Tainoceratidae by Hoare (1961) and Teichert et al. (1964); to Nautilida by Sepkoski (2002); and to Gzheloceratidae by Shimanskiy (1967) and Laptikhovsky et al. (2013).
Synonymy list
| Year | Name and author |
|---|---|
| 1934 | Parametacoceras Miller and Owen p. 233 |
| 1961 | Parametacoceras Hoare p. 131 |
| 1964 | Parametacoceras Teichert et al. p. 414 |
| 1967 | Parametacoceras Shimanskiy p. 87 |
| 2002 | Parametacoceras Sepkoski |
| 2013 | Parametacoceras Laptikhovsky et al. pp. Appendix 1 |
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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. †Parametacoceras Miller and Owen 1934
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†Parametacoceras bellatulum Miller and Owen 1934
†Parametacoceras changxingense Zhao et al. 1978
†Parametacoceras heteromorphum Shimanskiy 1967
†Parametacoceras jongmansi Delepine 1937
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 4 | 13.4 | 11.0 | 21.0 | 11.8 | 4.77 | |
| shell diameter | 4 | 33.2 | 29.0 | 44.2 | 30.8 | 7.07 | |
| shell inflation | 4 | 12.3 | 11.0 | 15.0 | 11.8 | 1.80 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Podolskian to the top of the Changhsingian or 311.45000 to 252.17000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Moscovian | Ukraine | P. jongmansi (166829) | |
| Desmoinesian | USA (Missouri) | P. bellatulum (70255 70274 70382) | |
| Podolskian | Russian Federation | P. heteromorphum (49968) | |
| Changhsingian | China (Zhejiang) | P. changxingense (94954) P. sp. (111636 121646) |