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Omphaloptychia
Taxonomy
Omphaloptychia was named by von Ammon (1893). It is not extant.
It was assigned to Coelostylinidae by Batten (1985), Stanley et al. (1994) and Nützel et al. (2023).
It was assigned to Coelostylinidae by Batten (1985), Stanley et al. (1994) and Nützel et al. (2023).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1893 | Omphaloptychia von Ammon |
| 1985 | Omphaloptychia Batten p. 27 |
| 1994 | Omphaloptychia Stanley, Jr et al. p. 29 |
| 2023 | Omphaloptychia Nützel et al. |
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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. †Omphaloptychia von Ammon 1893
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†Omphaloptychia cingulata Batten 1985
†Omphaloptychia laevisphaera Batten and Stokes 1986
†Omphaloptychia paleozoica Batten 1985
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 9 | 5.80 | 3.70 | 9.40 | 5.20 | 2.02 | |
| shell diameter | 9 | 4.13 | 2.60 | 7.20 | 4.30 | 1.43 |
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||
Collections (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian | Malaysia (Perak) | O. sp., O. paleozoica, O. cingulata (62131) | |
| Smithian | USA (Utah) | O. laevisphaera (44283) O. sp. (32987 32988 33211 33213 33222 33233) | |
| Spathian | USA (Utah) | O. sp. (32936 32937 32938 32972) | |
| Anisian | Germany (Hessen) | O. sp. (44358) | |
| Pelsonian - Illyrian | Hungary | O. sp. (81050) | |
| Norian | Mexico (Sonora) | O. sp. (39172) |