| Echinochiton Temporal range: | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Polyplacophora |
| Order: | † Paleoloricata |
| Family: | † Echinochitonidae Pojeta et al., 2003 |
| Genus: | † Echinochiton Pojeta et al., 2003 |
| Species: | †E. dufoei |
| Binomial name | |
| †Echinochiton dufoei Pojeta et al., 2003 | |
Echinochiton is an extinct genus of Ordovician chitons [1] with hollow spines on its margins; these spines, which are unique among the chitons, have a strong organic component and show growth lines. [2]