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Derbyia grandis
Taxonomy
Derbyia grandis was named by Waagen (1884).
It was recombined as Derbya grandis by Buddington and Chapin (1929); it was recombined as Wardakia grandis by Termier et al. (1974).
It was recombined as Derbya grandis by Buddington and Chapin (1929); it was recombined as Wardakia grandis by Termier et al. (1974).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1884 | Derbyia grandis Waagen p. 597 figs. Pl 51, figs 1a-d; pl 52, figs 1,3; pl 53, figs 3,5 |
| 1902 | Derbyia grandis Tschernyschew p. 207 figs. Pl 24, figs 1,2; pl 26, fig 5 |
| 1916 | Derbyia grandis Tschernyschew and Stepanow p. 44 figs. Pl 10, fig 1 |
| 1929 | Derbya grandis Buddington and Chapin |
| 1961 | Derbyia grandis Shimizu p. 315 figs. Pl 15, figs 6,7 |
| 1973 | Derbyia grandis Grunt and Dmitriev p. 84 figs. Pl 3, figs 1-4 |
| 1974 | Wardakia grandis Termier et al. p. 95 figs. Pl 9, figs 2-5; pl 10, figs 1-3; text-figs 14a-d |
| 1978 | Derbyia grandis Licharew and Kotlyar figs. Pl 12, fig 1 |
| 1980 | Derbyia grandis Lee and Gu p. 336 figs. Pl 159, fig 13 |
| 1993 | Derbyia grandis Kalashnikov p. 23 figs. Pl 6, figs 1,2; pl 7, fig 7 |
| 1996 | Derbyia grandis Angiolini p. 9 figs. Pl 1, fig 7-9 |
| 2003 | Derbyia grandis Shen et al. p. 60 figs. Pl 1, figs 1-3; text-fig 4 |
| 2024 | Derbyia grandis Zong et al. p. 62 figs. 7.8-7.17 |
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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 grandis Waagen 1884
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 36.3 | 25.0 | 49.0 | 39.0 | 12.1 |
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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 252.17000 Ma
Collections (72 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Permian | USA (Alaska) | Derbya grandis (112193 112194 112196) | |
| Sakmarian | Afghanistan | Wardakia grandis (88398 119245) | |
| Sakmarian | Tajikistan | Derbyia grandis (100334) | |
| Sakmarian | Svalbard and Jan Mayen | Derbyia grandis (212501) | |
| Artinskian | Canada (Nunavut) | Derbyia grandis (119287) | |
| Kungurian | Russian Federation | Derbyia grandis (110008) | |
| Kungurian | Pakistan | Derbyia grandis (50683) | |
| Roadian | Canada (Yukon) | Derbyia grandis (10267) | |
| Roadian | Canada (Nunavut) | Derbyia grandis (11089) | |
| Roadian - Wordian | China (Yunnan) | Derbyia grandis (234360) | |
| Wordian | Pakistan | Derbyia grandis (125876) | |
| Wordian | China (Jilin) | Derbyia grandis (109606) | |
| Wordian | USA (Alaska) | Derbyia grandis (102536) | |
| Capitanian | Russian Federation | Derbyia grandis (112548) | |
| Wuchiapingian | Pakistan | Derbyia grandis (88933 119537 119541 119851 119874 119898 119931 119934 124772 125344 125345 125890 125898 125917 125925 125926 125927 126002 126267 126269 126270 126274 126275 126278 126296 126341 126453 126458 126459 126463 126699 126937 126994 127007 127026) Streptorhynchus crenistria (117776 117780) | |
| Wuchiapingian | China (Xizang) | Derbyia grandis (60578 60581 60582 60585) | |
| Wuchiapingian - Changhsingian | Pakistan | Derbyia grandis (126708 126744 126745 126748 126761 126890 127000) | |
| Changhsingian | Pakistan | Derbyia grandis (90251 119677 126882 126883 126980) | |
| Changhsingian | Japan | Derbyia grandis (73812) | |
| Changhsingian | China (Xizang) | Orthotetes guppyi (110495) |