Claim: The Greenland shark is in the Somniosidae genus.
Evidence: The Greenland shark -LRB- Somniosus microcephalus -RRB- , also known as the gurry shark , or grey shark , or by the Inuit name eqalussuaq , is a large shark of the family Somniosidae -LRB- `` sleeper sharks '' -RRB- , closely related to the Pacific and southern sleeper sharks.
The Somniosidae are a family of sharks in the order Squaliformes , commonly known as sleeper sharks.
Somniosus is a widely distributed genus of deepwater dogfish sharks in the family Somniosidae.