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Tarimathyris discusella
Taxonomy
Spirigerella discusella was named by Xu and Grant (1994). Its type specimen is USNM 456175, a shell (Articulated shell), and it is a 3D body fossil. Its type locality is Liangfenya, Beifengjing Section, Changxing Fm, which is in a Changhsingian carbonate limestone in the Changxing Formation of China.
It was recombined as Araxathyris discusella by Shen et al. (2004); it was recombined as Tarimathyris discusella by Chen and Shi (2006).
It was recombined as Araxathyris discusella by Shen et al. (2004); it was recombined as Tarimathyris discusella by Chen and Shi (2006).
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Spirigerella discusella Xu and Grant p. 51 figs. 40, 43.36-43.47 |
| 1996 | Spirigerella discurella Xu and Grant |
| 2004 | Araxathyris discusella Shen et al. p. 888 |
| 2006 | Tarimathyris discusella Chen and Shi p. 31 |
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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.
†Tarimathyris discusella Xu and Grant 1994
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 7.32 | 6.70 | 8.00 | 7.35 | 0.919 |
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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: Changhsingian or 254.14000 to 251.90200 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Changhsingian | China (Chongqing) | Spirigerella discusella (50033 type locality: 120783) | |
| Changhsingian | China (Hunan) | Spirigerella discurella (31420) Spirigerella discusella (120800) | |
| Changhsingian | China (Zhejiang) | Spirigerella discusella (50028) |