Genus
Ewacaste Ramsköld et Edgecombe, 1993
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Phacopida |
| Suborder | Phacopina |
| Family | Acastidae |
| Genus | Acaste |
| Acastella | |
| Ewacaste | |
| Hollardops | |
| Metacanthina | |
| Phacopidina | |
| Sokhretia |