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Leptellina subquadrata
Taxonomy
Leptelloidea subquadrata was named by Rukavishnikova (1956). Its type specimen is IGNA 72/1369 and is a 3D body fossil.
It was recombined as Leptellina subquadrata by Nikitina et al. (2006).
It was recombined as Leptellina subquadrata by Nikitina et al. (2006).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1956 | Leptelloidea subquadrata Rukavishnikova p. 134 figs. pl. 2, figs 12–14 |
| 2006 | Leptellina subquadrata Nikitina et al. pp. 182 - 184 figs. 25.7–10; 26C, D |
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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.
†Leptellina subquadrata Rukavishnikova 1956
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| O. I. Nikitina et al. 2006 | Shell small for genus, strongly concavoconvex, transversely subrectangular in outline; radial ornament unequally parvicostellate with 3–4 accentuated costellae; dorsal interior with short median septum strongly raised anteriorly; dorsal platform high, subtriangular, extended slightly anterior to mid-valve. |
Measurements
No measurements are available
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| Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Hendy 2009, Nesnidal et al. 2013 | |||||
Age range: Abereiddian or 468.00000 to 461.10000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Abereiddian | Kazakhstan | Leptellina subquadrata (165482 165486 165487 165543 165544 165546) |