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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Spirigerella subtriquetra
Taxonomy
Spirigerella subtriquetra was named by Jin et al. (1974).
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Spirigerella subtriquetra Jin et al. p. 309 figs. Pl 163, figs 7-10 |
| 1978 | Spirigerella subtriquetra Feng and Jiang p. 282 figs. Pl 102, fig 18 |
| 1995 | Spirigerella subtriquetra Zeng et al. figs. Pl 16, fig 13 |
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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.
†Spirigerella subtriquetra Jin et al. 1974
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 19.9 |
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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 Wordian to the top of the Capitanian or 266.90000 to 259.51000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wordian | Iran | Spirigerella subtriquetra (112944) | |
| Wordian | China (Guizhou) | Spirigerella subtriquetra (98059) | |
| Capitanian | China (Sichuan) | Spirigerella subtriquetra (153941) |