| Triptychus | |
|---|---|
| | |
| Drawing of a shell of Triptychus niveus | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Subcohort: | Panpulmonata |
| Superfamily: | Pyramidelloidea |
| Family: | Pyramidellidae |
| Genus: | Triptychus Mörch, 1875 [1] |
| Type species | |
| Triptychus nivea Mörch, 1875 | |
| Synonyms [2] | |
Pyramidella (Triptychus)Mörch, 1875 | |
Triptychus is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies. [2]
The subulate shell is spirally paucilirate. The aperture is lirate within, subsinuated in front. The columella is triplicate. [3]
Species within the genus Triptychus include: [2]

Pyramidellinae is a taxonomic subfamily of minute sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Murchisonellidae is a taxonomic family of sea snails, marine opisthobranch gastropod mollusks in the superfamily Murchisonelloidea.

Pyramidella is a genus of minute to medium-sized sea snails, marine gastropod mollusk in the subfamily Pyramidellinae of the family Pyramidellidae, the pyrams and their allies.
Mangeliidae is a monophyletic family of small to medium-sized, predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.
Cymatosyrinx is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.
Lioglyphostoma is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae.
Monilispira is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae, the turrids and allies.
Fusiturricula is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.
Pyrgocythara is a genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Nassarina is a genus of sea snails, marine gastropod mollusks in the family Columbellidae, the dove snails.
Rissoina is a large genus of minute sea snails, marine gastropod mollusks or micromollusks, in the family Rissoinidae.
Cerithiopsis is a genus of very small sea snails, marine gastropod mollusks or micromollusks in the family Cerithiopsidae.
Eulimostraca is a genus of small, ectoparasitic sea snails, marine gastropod mollusks in the family Eulimidae.
Careliopsis is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Longchaeus is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Peristichia is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Turbonilla is a large genus of ectoparasitic sea snails, marine gastropod molluscs in the family Pyramidellidae, the pyrams and their allies.
Triptychus incantatus is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Lirobarleeia is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Barleeiidae.
Cyclostremiscus is a genus of small sea snails in the family Tornidae.