| Spirolaxis | |
|---|---|
| | |
| Shell of Spirolaxis centrifuga (specimen at MNHN, Paris) | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Infraclass: | Lower Heterobranchia |
| Superfamily: | Architectonicoidea |
| Family: | Architectonicidae |
| Genus: | Spirolaxis Monterosato, 1913 |
| Type species | |
| Spirolaxis centrifuga(Monterosato, 1890) | |
| Synonyms | |
| |
Spirolaxis is a genus of sea snails, marine gastropod mollusks in the family Architectonicidae, the staircase shells or sundials. [1]
(Original description) The shell is discoidal; its whorls are quadrangular, detached, and solute. [2]