Polysacos
Extinct genus of molluscs
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Polysacos is an extinct genus of multiplacophorans (chitons) known from articulated Carboniferous fossils; its seventeen shell plates are arranged in three rows, with seven iterated units. It demonstrates that multiplacophora are related to modern polyplacophora.[1] It was fringed with a ring of hollow spines resembling those of the Ordovician Echinochiton.[1]
| Polysacos Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Polyplacophora |
| Order: | †Multiplacophora |
| Genus: | †Polysacos Vendrasco et al., 2004 |
| Species: | †P. vickersianum |
| Binomial name | |
| †Polysacos vickersianum Vendrasco et al., 2004 | |
