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Leptelloidea leptelloides
Taxonomy
Plectambonites schmidti leptelloides was named by Bekker (1922). It is the type subspecies of Leptelloidea.
It was recombined as Leptelloidea leptelloides by Jones (1928), Rasmussen et al. (2012).
It was recombined as Leptelloidea leptelloides by Jones (1928), Rasmussen et al. (2012).
Synonymy list
| Year | Name and author |
|---|---|
| 1921 | Plectambonites schmidti leptelloides Bekker |
| 1922 | Plectambonites schmidti leptelloides Bekker |
| 1928 | Leptelloidea leptelloides Jones |
| 2012 | Leptelloidea leptelloides Rasmussen et al. p. 27 figs. Plate 5, figures 9–14 |
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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.
†Leptelloidea leptelloides Bekker 1922
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. M. O. Rasmussen et al. 2012 | Shell moderately concave, transverse, subelliptical in outline. Maximum width probably at hinge line. Anterior commissure rectimarginate.Dorsal valve strongly concave,with a high,wide catacline interarea. Chilidiumabsent. Unequally parvicostellate ornamentation with relatively closely spaced accentuated costellae that are intercepted by accentuated costae.
Dorsal interior with large bulbous cardinal process projecting posteriorly from a closed, convex chilidium. Socket ridges wing-like, bending at right angles in the anterior direction and not supported by valve floor, laterally. Dorsal median septum more like an elevated, thick ridge with a pair of side septa extending just anterior of cardinalia as short caluses on platform floor. Anteriorly the septum fuses with valve floor to form a bilobed elevated platform that continues laterally towards the cardinal extremities, extending for at least half of valve area. Muscle impressions faint. |
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 | |||||
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lasnamagi | Estonia | Leptelloidea leptelloides (56210) | |
| Uhaku | Estonia | Leptelloidea leptelloides (204098) | |
| Uhaku - Kukruse | Russian Federation (Yaroslavl Oblast) | Leptelloidea leptelloides (235883) | |
| Uhaku - Kukruse | Russian Federation (Novgorod oblast) | Leptelloidea leptelloides (235812) | |
| Sandbian | USA (Alaska) | Leptelloidea leptelloides (164856) | |
| Ashbyan | USA (Alaska) | Leptelloidea leptelloides (164853) |