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Fissurellidae – Fissurellinae: Macroschisma productum A. Adams, 1851 (‘elongated keyhole-limpet’)
Synonym(s): productum A. Adams, 1850.
Typical shell-length 25 mm. As with all keyhole-limpets, the shell sits atop a much larger animal. Lives intertidally and subtidally atttached to stones and the shells of living molluscs. Native. Endemic to southeastern Australia (NSW, TAS, VIC and SA).
Classification
Class: Gastropoda
Subclass: Vetigastropoda
Order: Vetigastropoda
Superfamily: Fissurelloidea
Family: Fissurellidae
Subfamily: Fissurellinae
Genus: Macroschisma
Localities for Macroschisma productum
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2017/11/Macroschisma-productum_a.jpg)
![species image](https://molluscsoftasmania.org.au/wp-content/uploads/2017/11/Macroschisma-productum_b.jpg)
![locality map](https://molluscsoftasmania.org.au/wp-content/uploads/2017/11/Macroschisma-productum.jpg)