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Ischnochitonidae – Callistoplacinae: Callistochiton antiquus (Reeve, 1847) (‘ancient chiton’)
Synonym(s): antiquus Reeve, 1847 mayi Ashby, 1919 meridionalis Ashby, 1919.
Typical shell-length 40 mm. Lives subtidally under rocks and stones, primarily in slightly silty areas. Native. Endemic to southeastern and southwestern Australia (QLD, NSW, TAS, VIC, SA and WA).
Classification
Class: Polyplacophora
Subclass: Chelodina
Order: Neoloricata
Superfamily: Ischnochitonina
Family: Callistoplacidae
Genus: Callistochiton
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2018/04/Callistochiton-antiquus-1.jpg)
![locality map](https://molluscsoftasmania.org.au/wp-content/uploads/2018/04/Callistochiton-antiquus.jpg)