| Boreosomus Temporal range:
| |
|---|---|
| |
| Boreosomus gillioti: fossil mold and latex cast | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | †Ptycholepiformes |
| Family: | †Ptycholepididae |
| Genus: | †Boreosomus Stensiö, 1921 |
| Type species | |
| †Acrolepis arctica Woodward, 1912
| |
| Synonyms | |
| |
Boreosomus (meaning: "boreal body") is an extinct genus of Triassic marine ray-finned fish. It was first described from the Arctic island of Spitsbergen (Svalbard, Norway), hence its genus name, but was later also discovered in other parts of the world. The type species is Boreosomus arcticus (= Acrolepis arctica Woodward, 1912).