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Tetraphalerella bestiubensis
Taxonomy
Tetraphalerella bestiubensis was named by Nikitin et al. (2003). Its type specimen is NMW 98.30G.5, a shell (dorsal internal mould), and it is a 3D body fossil. Its type locality is Locality 550a - Kaskol Bed, East of Bolshoi Kaskol lake., which is in a Katian carbonate limestone in the Tauken Formation of Kazakhstan.
Synonymy list
| Year | Name and author |
|---|---|
| 2003 | Tetraphalerella bestiubensis Nikitin et al. pp. 42 - 44 figs. 3A–H, 4A, B |
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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.
†Tetraphalerella bestiubensis Nikitin et al. 2003
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| I. F. Nikitin et al. 2003 | Convexiconcave to convexiplane, transverse, suboval shell about 75% as long as wide with flattened lateral ventral profile; dorsal valve moderately and evenly convex, about 20% as high as long with very weak umbonal sulcus fading anteriorly; radial ornament unequally parvicostellate with 13–15 ribs per 3mm along the anterior margin of mature specimens and with up to 5 parvicostellae in interspaces between accentuated ribs. |