†family Stenopterygiidae Kühn 1934 (ichthyosaur)
Alternative spelling: Stenopterygiinae
Parent taxon: Thunnosauria according to M. W. Maisch 2010
Sister taxa: Baracromia, Ichthyosauridae, Ichthyosaurus, Malawania
Subtaxa: none
Ecology: nektonic carnivore