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Leptella sarytumensis
Taxonomy
Leptella sarytumensis was named by Nikitina et al. (2006). Its type specimen is USNM 485133, a valve (dorsal valve), and it is a 3D body fossil. Its type locality is Locality 133. 4 kilometers southwest of Alakul Lake, which is in an Abereiddian open shallow subtidal limestone/siltstone in the Alakul Formation of Kazakhstan.
Synonymy list
| Year | Name and author |
|---|---|
| 2006 | Leptella sarytumensis Nikitina et al. pp. 184 - 185 fig. 25.11–13 |
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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.
†Leptella sarytumensis Nikitina et al. 2006
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| O. I. Nikitina et al. 2006 | Strongly concavoconvex with rectimarginate anterior commissure; shell surface with strongly developed comae; dorsal median ridge crosses the subperipheral rim bordering the platform at about 80% of valve length anterior to the umbo. |
Measurements
No measurements are available
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| Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004, Hendy 2009 | |||||
Age range: Abereiddian or 468.00000 to 461.10000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Abereiddian | Kazakhstan | Leptella sarytumensis (type locality: 165483 165485) |