Alkenopterus
| Alkenopterus Temporal range: Late Pragian-Early Emsian,  | |
|---|---|
| SMF VIII 150, the holotype of Alkenopterus brevitelson | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Arthropoda | 
| Subphylum: | Chelicerata | 
| Order: | †Eurypterida | 
| Superfamily: | †Onychopterelloidea | 
| Family: | †Onychopterellidae | 
| Genus: | †Alkenopterus Størmer, 1974 | 
| Type species | |
| †Alkenopterus brevitelson Størmer, 1974 | |
| Species | |
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Alkenopterus is a genus of prehistoric eurypterid classified as part of the family Onychopterellidae. The genus contains two species, A. brevitelson and A. burglahrensis, both from the Devonian of Germany.