Polycotylidae

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iPolycotylidae
Fossil range: Cretaceous
Conservation status
Extinct (fossil)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Plesiosauria
Suborder: Plesiosauroidea
Family: Polycotylidae
Williston, 1909
Genera

Dolichorhynchops
Edgarosaurus
Polycotylus
Thililua
Tinacromerum
Procotylus
Georgiasaurus
Ceraumasaurus

Polycotylidae is a family of large plesiosaurs from Cretaceous, sister group to the elasmosauridae.

With their short necks and large elongated heads, they resemble the pliosaurs, but closer phylogenetical studies indicate that they share many common features with the plesiosauridae and elasmosauridae. Their distribution was worldwide.

[edit] References

http://www.palaeos.com/Vertebrates/Units/220Lepidosauromorpha/220.820.html#Polycotylidae

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