Asaphus expansus
| Asaphus expansus Temporal range:  | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Arthropoda | 
| Class: | †Trilobita | 
| Order: | †Asaphida | 
| Family: | †Asaphidae | 
| Genus: | †Asaphus | 
| Species: | †A. expansus | 
| Binomial name | |
| †Asaphus expansus (Wahlenberg, 1821) | |
Asaphus expansus (/ˈæsæfʌs ɛkspænsʌs/) is the type species of the asaphid trilobite genus Asaphus. It was previously classified as Entomostracites expansus before being split off into its own genus.