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Costatumulus polliciformis
Taxonomy
Cancrinella polliciformis was named by Waterhouse (1978). Its type specimen is UQF 68906, a valve (Ventral valve), and it is not a trace fossil. Its type locality is W1275, Section 13, Popagaon, Karnali, which is in a Changhsingian marine siliciclastic in the Senja Formation of Nepal.
It was recombined as Coolkilella polliciformis by Waterhouse and Chen (2007); it was recombined as Costatumulus polliciformis by Shen et al. (2003), Li et al. (2012), Shen et al. (2016), Xu et al. (2018).
It was recombined as Coolkilella polliciformis by Waterhouse and Chen (2007); it was recombined as Costatumulus polliciformis by Shen et al. (2003), Li et al. (2012), Shen et al. (2016), Xu et al. (2018).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1978 | Cancrinella polliciformis Waterhouse p. 76 figs. Pl 11, figs 9-12 |
| 2003 | Costatumulus polliciformis Shen et al. p. 80 figs. Pl 10, figs 15-22 |
| 2007 | Coolkilella polliciformis Waterhouse and Chen p. 22 |
| 2012 | Costatumulus polliciformis Li et al. |
| 2016 | Costatumulus polliciformis Shen et al. p. 528 figs. 5S-Y |
| 2018 | Costatumulus polliciformis Xu et al. p. 150 figs. Pl 1, figs 13-16 |
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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.
†Costatumulus polliciformis Waterhouse 1978
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 10.0 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Williams et al. 2000, Aberhan et al. 2004 | |||||
Age range: base of the Kungurian to the top of the Changhsingian or 283.30000 to 251.90200 Ma
Collections (18 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian - Roadian | China (Xizang) | Costatumulus polliciformis (182797 182801 182802 182803) | |
| Wuchiapingian | India | Productus cancriniformis (107358) | |
| Wuchiapingian | China (Xizang) | Costatumulus polliciformis (60581 60582 60583 60587) Productus cancriniformis (89203) | |
| Lopingian | China (Xizang) | Costatumulus polliciformis (192076) | |
| Changhsingian | Nepal | Cancrinella polliciformis (43174 43185 43187 type locality: 43190 43197 43199) | |
| Changhsingian | China (Xizang) | Costatumulus polliciformis (60594) |