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Calliostomatidae – Calliostomatinae: Calliostoma (Sinutor) incertum (Reeve, 1863) (‘sinistral top-shell’)
Synonym(s): incertum Reeve, 1863.
Typical shell-length 15 mm. Lives subtidally and offshore on sponges. Native. Endemic to southeastern and southwestern Australia (NSW, TAS, VIC, SA and WA).
Classification
Class: Gastropoda
Subclass: Vetigastropoda
Order: Vetigastropoda
Superfamily: Trochoidea
Family: Calliostomatidae
Subfamily: Calliostomatinae
Genus: Calliostoma
Localities for Calliostoma incertum
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2018/04/Calliostoma-incertum_a.jpg)
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2018/04/Calliostoma-incertum_b.jpg)
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2018/04/Calliostoma-incertum_d.jpg)
![locality map](https://molluscsoftasmania.org.au/wp-content/uploads/2018/04/Calliostoma-incertum.jpg)
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2018/04/Calliostoma-incertum_c.jpg)