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Mellopegma uslonica
Taxonomy
Mellopegma uslonica was named by Parkhaev (2004) [= "Unnamed form 3" Kouchinsky 2000a, fig. 5.m-o. (Vendrasco etal. 2011 ref. 36638)]. It is a 3D body fossil. Its type locality is 7000/71, Uslon Section, which is in a Botomian carbonate limestone in the Bystraya Formation of the Russian Federation.
It was corrected as Mellopegma uslonicum by Vendrasco et al. (2011).
It was corrected as Mellopegma uslonicum by Vendrasco et al. (2011).
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Mellopegma uslonica Parkhaev p. 603 figs. pl. 2 f. 5-9 |
| 2011 | Mellopegma uslonicum Vendrasco et al. p. 11A18 figs. 12-13 |
| 2023 | Mellopegma uslonica Wagner p. 5631 |
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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.
†Mellopegma uslonica Parkhaev 2004
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. J. Vendrasco et al. 2011 | Elongate, laterally compressed shell with gently convex dorsal margin and gently concave sub-apical margin with slight lateral flaring of aperture. Internal mould typically covered with tubercles or granules (Figure 13.1, 13.3, 13.4), revealing nearly isotropically spaced cavities or pores along the inner shell surface. External ornament of ridges. |