Orophosaurus

Orophosaurus is an extinct genus of plesiosaur.

References

Major clades

Basal plesiosaurs

Plesiosauroidea	Cryptoclididae Elasmosauridae ?Leptocleididae Microcleididae ?Polycotylidae Plesiosauridae

Pliosauroidea	?Leptocleididae ?Polycotylidae Pliosauridae Rhomaleosauridae

Related clades

Plesiosauridae and basal taxa

Cryptoclidinae	Abyssosaurus Colymbosaurus Cryptoclidus Kimmerosaurus Tatenectes Tricleidus

Muraenosaurinae	Muraenosaurus Picrocleidus Vinialesaurus

Aristonectinae	Aristonectes Kaiwhekea

Elasmosaurinae	Albertonectes Elasmosaurus Styxosaurus Terminonatator

Others

Cryonectes Gallardosaurus Liopleurodon Peloneustes Pliosaurus Simolestes

Brachaucheninae	Brachauchenius Kronosaurus Makhaira Megacephalosaurus Polyptychodon Stenorhynchosaurus

Others

Basal taxa	?Hastanectes ?Nichollssaura

Leptocleididae	Brancasaurus ?Hastanectes Leptocleidus ?Nichollssaura ?Umoonasaurus Vectocleidus

Polycotylidae	Dolichorhynchops Edgarosaurus Eopolycotylus Georgiasaurus Manemergus Pahasapasaurus Palmulasaurus Plesiopleurodon Polycotylus Sulcusuchus Thililua Trinacromerum ?Umoonasaurus

Related articles and categories

Plesiosaurs List of plesiosaurs

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