Stenopterygiidae

Stenopterygiidae are a family of the Ichthyosauria, a group of extinct marine reptiles that superficially resemble fish. They are distinguished from other ichthyosaurs by the arrangement of the flipper bones and by the broad attachment of the fins to the body.

Stenopterygiidae Temporal range: Early Jurassic, 183–179 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ Possible Middle Jurassic record
Stenopterygius quadriscissus fossil preserving soft tissue envelope
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Superorder:	†Ichthyopterygia
Order:	†Ichthyosauria
Clade:	†Baracromia
Family:	†Stenopterygiidae Jaekel, 1904
Genera
†Chacaicosaurus? †Magnipterygius[1] †Stenopterygius