Cryopterygius

Extinct genus of reptiles

Cryopterygius Temporal range: Tithonian ~150–145 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓

Skull bones of C. kielanae
Scientific classification
Domain:	Eukaryota
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 ichthyosaur known from the uppermost Jurassic of Central Spitsbergen, Norway. The type species, Cryopterygius kristiansenae , is known from a single, but largely complete specimen from the Slottsmøya Member of the Agardhfjellet Formation (middle Volgian/late Tithonian, Late Jurassic). With a total length of 5–5.5 metres (16–18 ft), it is a large ichthyosaur.^[1] A second species, C. kielanae, was found in the Kcynia Formation from the Late Jurassic of Poland. It is smaller than the type species, with a length of 3.5–4 metres (11–13 ft).^[2]

References

^ Patrick S. Druckenmiller; Jørn H. Hurum; Espen M. Knutsen; Hans Arne Nakrem (2012). "Two new ophthalmosaurids (Reptilia: Ichthyosauria) from the Agardhfjellet Formation (Upper Jurassic: Volgian/Tithonian), Svalbard, Norway". Norwegian Journal of Geology. 92 (2–3): 311–339. ISSN 1502-5322. Low resolution pdf Archived 2015-09-24 at the Wayback Machine High resolution pdf Archived 2015-09-24 at the Wayback Machine
^ Daniel Tyborowski (2016). "A new ophthalmosaurid ichthyosaur from the Late Jurassic of Owadów-Brzezinki Quarry, Poland". Acta Palaeontologica Polonica. in press. doi:10.4202/app.00252.2016.

External links

Media related to Cryopterygius at Wikimedia Commons

Ichthyosauromorpha

Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Subclass: Diapsida
Clade: Neodiapsida

Sauropsida

see Sauropsida
Ichthyosauromorpha	see below↓

Ichthyosauromorpha

Baisesaurus

Hupehsuchia

Eohupehsuchus
Nanchangosaurus

Hupehsuchidae

Hupehsuchus
Parahupehsuchinae	Eretmorhipis Parahupehsuchus

Parvinatator Utatsusaurus
Grippiidae	Gulosaurus Grippia

Ichthyosauria

- see below↓

Ichthyosauria

Cymbospondylidae	Cymbospondylus Phantomosaurus? Thalattoarchon? Xinminosaurus?

Hueneosauria

Cymbospondylidae?

Auroroborealia? Californosaurus Callawayia Guizhouichthyosaurus? Mikadocephalus? Shonisaurus?
Toretocnemidae?	Qianichthyosaurus? Toretocnemus
Parvipelvia	see below↓

Nomina dubia	Barracudasaurus Pachygonosaurus Pessosaurus Sphaerodontes Svalbardosaurus Tibetosaurus

Parvipelvia

Hudsonelpidia
Macgowania

Neoichthyosauria

Temnodontosauroidea?

Temnodontosaurus
Leptonectidae?	Eurhinosaurus? Excalibosaurus? Leptonectes Wahlisaurus?

Thunnosauria

Ichthyosauridae	Ichthyosaurus Malawania? Protoichthyosaurus?

Baracromia

Chacaicosaurus?

Stenopterygiidae

Magnipterygius
Stenopterygius

Ophthalmosauria

Ophthalmosauridae

Arthropterygius? Gengasaurus? Jabalisaurus Janusaurus? Myobradypterygius Nannopterygius? Palvennia? Thalassodraco?
Ophthalmosaurinae	Acamptonectes Baptanodon Mollesaurus Ophthalmosaurus

Platypterygiidae

Acuetzpalin Aegirosaurus Arthropterygius? Athabascasaurus? Brachypterygius Catutosaurus Cryopterygius? Grendelius Janusaurus? Kazakhstanosaurus Keilhauia? Muiscasaurus Palvennia? Parrassaurus Pervushovisaurus Sumpalla Sveltonectes Undorosaurus
Platypterygiinae	Caypullisaurus Kyhytysuka Leninia Maiaspondylus Platypterygius Plutoniosaurus Simbirskiasaurus Sisteronia