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Dyschrestia
Taxonomy
Dyschrestia was named by Grant (1976) [Sepkoski's age data: P Leon-u Sepkoski's reference number: 403,1246]. Its type is Dyschrestia spodia.
It was assigned to Costispiniferini by Williams et al. (2000); to Strophomenida by Sepkoski (2002); and to Lethamiini by Williams et al. (2007).
It was assigned to Costispiniferini by Williams et al. (2000); to Strophomenida by Sepkoski (2002); and to Lethamiini by Williams et al. (2007).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1976 | Dyschrestia Grant p. 101 |
| 2000 | Dyschrestia Williams et al. p. 434 |
| 2002 | Dyschrestia Sepkoski |
| 2007 | Dyschrestia Williams et al. p. 2640 |
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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. †Dyschrestia Grant 1976
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†Dyschrestia colemani Archbold 1984
†Dyschrestia spodia Grant 1976
†Dyschrestia takelamaganensis Chen and Shi 2006
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 1 | 8.10 | - | - | - | - | |
| valve height | 3 | 13.0 | 8.80 | 17.2 | 14.5 | 4.29 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013, Williams et al. 2000 | |||||
Age range: base of the Bashkirian to the top of the Roadian or 323.20000 to 268.80000 Ma
Collections (23 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bashkirian | Argentina (La Rioja) | D. sp. (136523 136524) | |
| Kungurian | Thailand | D. sp. (117142 221705 221706 221707) | |
| Kungurian | China (Xinjiang) | D. takelamaganensis (62754 62755 62756) | |
| Kungurian | Australia (Western Australia) | D. colemani (101292 101299) | |
| Roadian | Thailand (Trang) | D. spodia (40869 40871 40872 40873 40875 40878 40894 40895 40896 40897 40899) | |
| Roadian | Australia (Western Australia) | D. sp. (101300) |