Cryopterygius

Cryopterygius Temporal range: Late Jurassic, Tithonian PreЄ Є O S D C P T J K Pg N
Skull bones of C. kielanae
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	†Ichthyosauria
Family:	†Ophthalmosauridae
Genus:	†Cryopterygius Druckenmiller et al., 2012
Type species
†Cryopterygius kristiansenae Druckenmiller et al., 2012

Cryopterygius (meaning 'frozen fin' in Greek) is an extinct genus of ophthalmosaurid ichthyosaurian known from the uppermost Jurassic of Central Spitsbergen, Norway. It is known from a single, but largely complete specimen from the Slottsmøya Member of the Agardhfjellet Formation (middle Volgian/late Tithonian, Late Jurassic). At 5.0–5.5 m total length, it is a large ichthyosaur. The type species is Cryopterygius kristiansenae Druckenmiller et al., 2012. A second species, C. kielanae, was found in the Kcynia Formation from the Late Jurassic of Poland.