Acastocephala
| Acastocephala Temporal range: Silurian | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Arthropoda | 
| Class: | †Trilobita | 
| Order: | †Phacopida | 
| Family: | †Acastidae | 
| Genus: | †Acastocephala Shergold, 1966 | 
| Species | |
Acastocephala is a genus of trilobites from the middle Silurian, known from the United Kingdom.