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Cleiothyridina subexpansa
Taxonomy
Athyris subexpansa was named by Waagen (1883).
It was recombined as Spirigera subexpansa by Diener (1915) and Tewari and Srivastava (1967); it was recombined as Cleiothyridellina subexpansa by Grunt (1986); it was recombined as Cleiothyridina subexpansa by Fantini Sestini (1965), Waterhouse (1966), Waterhouse (1978), Grunt (1980), Shimizu (1981), Shen et al. (2001), Waterhouse and Chen (2007) and Tazawa (2011).
It was recombined as Spirigera subexpansa by Diener (1915) and Tewari and Srivastava (1967); it was recombined as Cleiothyridellina subexpansa by Grunt (1986); it was recombined as Cleiothyridina subexpansa by Fantini Sestini (1965), Waterhouse (1966), Waterhouse (1978), Grunt (1980), Shimizu (1981), Shen et al. (2001), Waterhouse and Chen (2007) and Tazawa (2011).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1883 | Athyris subexpansa Waagen pp. 478-479 figs. Pl 39, fig 1-5 |
| 1897 | Athyris subexpansa Diener p. 61 figs. Pl 10, fig 4 |
| 1915 | Spirigera subexpansa Diener p. 94 figs. Pl 10, fig 4 |
| 1965 | Cleiothyridina subexpansa Fantini Sestini p. 68 figs. Pl 7, figs 3a,b |
| 1966 | Cleiothyridina subexpansa Waterhouse p. 62 figs. Pl 8, fig 3; pl 10, fig 3 |
| 1967 | Spirigera subexpansa Tewari and Srivastava |
| 1978 | Cleiothyridina subexpansa Waterhouse p. 37 figs. Pl 3, figs 10-13 |
| 1980 | Cleiothyridina subexpansa Grunt p. 86 figs. Pl 14, figs 5, 6; pl 15, figs 3, 4; text-fig 43 |
| 1981 | Cleiothyridina subexpansa Shimizu p. 79 figs. Pl 7, figs 9,10 |
| 1986 | Cleiothyridellina subexpansa Grunt figs. Pl 6, figs 6, 7 |
| 2001 | Cleiothyridina subexpansa Shen et al. p. 176 |
| 2007 | Cleiothyridina subexpansa Waterhouse and Chen p. 37 figs. Pl 9, figs 9-11,15 |
| 2011 | Cleiothyridina subexpansa Tazawa p. 176 figs. 5.8-5.10 |
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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.
†Cleiothyridina subexpansa Waagen 1883
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. B. Waterhouse 1966 | Transverse little inflated shells with shallow anterior ventral sulcus, concave posterior walls, and 15 to 20 spines in 5 mm. |
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 13 | 15.0 | 7.00 | 24.6 | 15.0 | 4.19 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Kungurian to the top of the Changhsingian or 279.30000 to 252.17000 Ma
Collections (147 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian | China (Guangxi) | Cleiothyridina subexpansa (134340) | |
| Roadian | Canada (Nunavut) | Cleiothyridina subexpansa (11089) | |
| Wordian | Iran (Tehran) | Cleiothyridina subexpansa (43292 43293) | |
| Capitanian | China (Xizang) | Cleiothyridina subexpansa (110083) | |
| Capitanian | Pakistan | Athyris gerardi (125883) Athyris royssii (120123) Athyris subexpansa (119818 120158 120159 127001 127032) | |
| Wuchiapingian | China (Xizang) | Athyris subexpansa (89203) | |
| Wuchiapingian | China (Hubei) | Cleiothyridina subexpansa (107749) | |
| Wuchiapingian | Pakistan | Athyris gerardi (125897 125924 126299 126737 126936 126994) Athyris royssii (119541 119555 119638 119641 119874 119898 120124 120125) Athyris subexpansa (119550 119623 119842 119843 125887 125892 125895 125896 125898 125901 125902 125907 125908 125909 125910 125912 125918 125920 125921 125925 125928 125963 126002 126003 126263 126264 126268 126269 126270 126271 126272 126278 126279 126281 126293 126295 126297 126298 126300 126302 126341 126342 126343 126344 126345 126450 126452 126453 126457 126458 126459 126461 126463 126691 126692 126693 126881 126984 126991 126995 127004 127005 127006 127007 127010 127025 127026 127027 127028) Athyris subexpansa, Athyris gerardi (126004 126007 126008 126265 126280 126460 126937 126993 127030) Athyris subexpansa, Athyris royssii (90253 119849) Cleiothyridina subexpansa (100022) | |
| Wuchiapingian | India (Kashmir) | Cleiothyridina subexpansa (115356) | |
| Wuchiapingian | Nepal | Cleiothyridina subexpansa (43118 43128) | |
| Wuchiapingian | India | Spirigera subexpansa (46291) | |
| Wuchiapingian | Japan | Cleiothyridina subexpansa (118923) | |
| Lopingian | India | Spirigera subexpansa (230849) | |
| Wuchiapingian - Changhsingian | Pakistan | Athyris gerardi (126757 126759) Athyris subexpansa (126704 126740 126746 126747 126750 126754 126760 126886 126986 126998 127017 127023) Athyris subexpansa, Athyris gerardi (126753 126762 127014) | |
| Changhsingian | China (Xizang) | Cleiothyridina subexpansa (73600 73603 73605) | |
| Changhsingian | Pakistan | Athyris gerardi (126996) Athyris royssii (89064 119608) Athyris subexpansa (81504 119637 120160 126897) Athyris subexpansa, Athyris gerardi (126882) | |
| Changhsingian | Nepal | Cleiothyridina subexpansa (62444 99791 120386 120443) |