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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Spiriferella keilhaviiformis
Taxonomy
Spiriferella keilhaviiformis was named by Fredericks (1916).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1916 | Spiriferella keilhaviiformis Fredericks |
| 1931 | Spiriferella keilhaviiformis Grabau p. 160 figs. Pl 21, figs 6,7 |
| 1980 | Spiriferella keilhaviiformis Lee and Gu p. 419 figs. Pl 178, figs 11,12 |
| 1991 | Spiriferella keilhaviiformis Pavlova et al. p. 126 figs. Pl 30, fig 8 |
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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.
†Spiriferella keilhaviiformis Fredericks 1916
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Artinskian to the top of the Wordian or 290.10000 to 264.28000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | Mongolia | Spiriferella keilhaviiformis (116264 116276) | |
| Kungurian | Mongolia | Spiriferella keilhaviiformis (116270 116271 116273 116274) | |
| Wordian | China (Nei Mongol) | Spiriferella keilhaviiformis (109215) | |
| Wordian - Capitanian | China (Heilongjiang) | Spiriferella keilhaviiformis (111166) |