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Pyandzhelasma
Taxonomy
Pyandzhelasma was named by Smirnova and Grunt (2002).
It was assigned to Dielasmatidae by Chen (2004); and to Gillediinae by Williams et al. (2006).
It was assigned to Dielasmatidae by Chen (2004); and to Gillediinae by Williams et al. (2006).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Pyandzhelasma Smirnova and Grunt p. 486 |
| 2004 | Pyandzhelasma Chen p. 59 |
| 2006 | Pyandzhelasma Williams et al. p. 2041 |
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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. †Pyandzhelasma Smirnova and Grunt 2002
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†Pyandzhelasma juresanense Tschernyschew 1902
†Pyandzhelasma juresanensiforme Licharew 2002
†Pyandzhelasma pyriforme Smirnova and Grunt 2002
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 10 | 12.8 | 7.50 | 18.0 | 13.2 | 2.99 |
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gzhelian | China (Guangxi) | Dielasma juresanense (134310) | |
| Asselian - Sakmarian | Laos | Dielasma juresanense (233571) | |
| Sakmarian | China (Xinjiang) | P. juresanense (35514) | |
| Kungurian | Tajikistan | P. juresanensiforme (42911) P. pyriforme, P. juresanensiforme (42914) | |
| Wordian | Pakistan | Dielasma juresanense (125827) |