Cryopterygius Temporal range: Late Jurassic, Tithonian |
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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.