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Araxathyris longa
Taxonomy
Composita longa was named by Zhang and Jin (1961). It is a 3D body fossil. Its type locality is Yan'gongtan, Longtan Fm, Jingxian County, which is in a Wuchiapingian carbonate limestone in the Longtan Formation of China.
It was recombined as Araxathyris longa by Zhan (1989), Wu et al. (2018).
It was recombined as Araxathyris longa by Zhan (1989), Wu et al. (2018).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1961 | Composita longa Zhang and Jin p. 407 figs. Pl 2, figs 9-12 |
| 1982 | Composita longa Wang et al. p. 255 figs. Pl 94, fig 3 |
| 1989 | Araxathyris longa Zhan figs. Pl 28, figs 17-19 |
| 2018 | Araxathyris longa Wu et al. p. 359 figs. 10I-L |
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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.
†Araxathyris longa Zhang and Jin 1961
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 10.6 | 9.30 | 12.0 | 10.7 | 1.91 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: base of the Wuchiapingian to the top of the Griesbachian or 259.51000 to 250.50000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wuchiapingian | China (Anhui) | Composita longa (type locality: 120117) | |
| Wuchiapingian | China (Shaanxi) | Araxathyris longa (148516) | |
| Changhsingian | China | Araxathyris longa (221336 221337 221339) | |
| Changhsingian | China (Guizhou) | Araxathyris longa (197009) | |
| Griesbachian | China | Araxathyris longa (221343) |