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Rongatrypa
Taxonomy
Rongatrypa was named by Popov and Cocks (2014).
It was assigned to Clintonellinae by Popov and Cocks (2014).
It was assigned to Clintonellinae by Popov and Cocks (2014).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2014 | Rongatrypa Popov and Cocks pp. 749 - 750 |
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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.
G. †Rongatrypa Popov and Cocks 2014
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†Rongatrypa instabilis Klenina 1984
†Rongatrypa rudis Rukavishnikova 1956
†Rongatrypa xichuanensis Xu 1997
†Rongatrypa zvontsovi Nikitin et al. 2003
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. E. Popov and L. R. M. Cocks 2014 | Shell variably dorsibiconvex with uniplicate anterior commissure and a well-defined ventral sulcus and U-shaped dorsal median fold originating between the umbo and mid-length. Ventral valve with small, erect, pointed beak and an open triangular delthyrium. Radial ornament of simple rounded ribs. Concentric ornament of fine densely spaced filae. Growth interruptions weakly developed to almost absent. Ventral interior with small teeth supported by thin dental plates. Floor of the delthyrial cavity completely occupied by pedicle callist. Ventral muscle field large, extending anteriorly to the mid-valve. |