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Retipirula
Taxonomy
Retipirula is a genus. It is not extant.
It was assigned to Neogastropoda by Sepkoski (2002); and to Volutoderminae by Saul and Squires (2008).
It was assigned to Neogastropoda by Sepkoski (2002); and to Volutoderminae by Saul and Squires (2008).
Species
Synonymy list
Year | Name and author |
---|---|
2002 | Retipirula Sepkoski |
2008 | Retipirula Saul and Squires p. 233 |
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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. †Retipirula
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†Retipirula calidula Saul and Squires 2008
†Retipirula crassitesta Gabb 1869
†Retipirula pinguis Saul and Squires 2008
Diagnosis
Reference | Diagnosis | |
---|---|---|
L. R. Saul and R. L. Squires 2008 | Pyriform volutes with axial and spiral ribbing forming nodes at their intersections and having two to four columellar plaits. Aperture extended posteriorly into rounded posterior notch at suture; inner lip callus expanded, forming parietal shield on whorl face extending adapically over previous suture. Protoconch turbinate. |