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Derbyia regularis
Taxonomy
Derbyia regularis was named by Waagen (1884).
It was recombined as Orthotetes regularis by Ustritsky (1960), Lee and Gu (1980).
It was recombined as Orthotetes regularis by Ustritsky (1960), Lee and Gu (1980).
Subspecies
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1884 | Derbyia regularis Waagen p. 594 figs. Pl 53, figs 1,2,4 |
| 1902 | Derbyia regularis Tschernyschew p. 203 figs. Pl 25, figs 1-3; pl 63, fig 5 |
| 1960 | Orthotetes regularis Ustritsky p. 99 figs. Pl 1, fig 13; pl 2, figs 1-5 |
| 1963 | Derbyia regularis Schréter p. 105 |
| 1963 | Derbyia regularis Ustritsky and Chernyak p. 70 figs. Pl 2, figs 5-7 |
| 1977 | Derbyia regularis Yang et al. p. 325 figs. Pl 134, fig 6 |
| 1980 | Orthotetes regularis Lee and Gu p. 335 figs. Pl 159, figs 4,5 |
| 1990 | Orthotetes fascicostata Liang p. 103 figs. Pl 9, figs 10-12 |
| 2007 | Derbyia regularis Shen and Shi p. 31 figs. Pl 11, figs 27,28; pl 12, fig 4 |
| 2008 | Derbyia regularis Li and Shen p. 317 fig. 6.9,6.10 |
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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.
†Derbyia regularis Waagen 1884
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†Derbyia regularis minor Waagen 1884
Invalid names: Orthotetes fascicostata Liang 1990 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 27.8 | 23.0 | 36.0 | 26.0 | 6.81 |
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| Source: c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: base of the Sakmarian to the top of the Changhsingian or 293.52000 to 251.90200 Ma
Collections (57 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Sakmarian | Russian Federation | Orthotetes regularis (119327) | |
| Kungurian | Russian Federation (Nenets Autonomous Okrug) | Orthotetes regularis (126183 126184 126185 126186 126187 126188 126189 126190 126191 126192 126193 126194 126195 126196 126197) | |
| Roadian - Wordian | China (Xinjiang) | Derbyia regularis (123273) | |
| Wordian | Pakistan | Derbyia regularis (81503 125818 125820 125821 125854) | |
| Wordian | Svalbard and Jan Mayen (Barentsøya) | Orthotetes regularis (212888) | |
| Wordian - Capitanian | China (Nei Mongol) | Orthotetes regularis (109610) | |
| Wordian - Changhsingian | Pakistan | Derbyia regularis (127029) | |
| Capitanian | Pakistan | Derbyia regularis (125342 125883 127033) | |
| Capitanian | China (Zhejiang) | Orthotetes fascicostata (111932) | |
| Wuchiapingian | Pakistan | Derbyia regularis (109262 119892 125903 125927 126004 126005 126264 126267 126272 126275 126297 126300 126302 126463 126940 126995) | |
| Wuchiapingian | China (Hunan) | Derbyia regularis (105921) | |
| Wuchiapingian | China (Zhejiang) | Derbyia regularis (111506) | |
| Wuchiapingian | Hungary | Derbyia regularis (131451) | |
| Wuchiapingian | China (Guizhou) | Derbyia regularis (138496) | |
| Changhsingian | Pakistan | Derbyia regularis (89064 119677 125343 126889) | |
| Changhsingian | China (Zhejiang) | Derbyia regularis (105213 105215) | |
| Changhsingian | China (Guizhou) | Derbyia regularis (117481) | |
| Changhsingian | China (Hunan) | Derbyia regularis (138548) |