ammonites
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Gateway to the Paleobiology Database

H. F. Ketchum and R. B. J. Benson 2010

Taxonomic opinions tied to this reference:
Edgarosaurus belongs to Polycotylidae
Hydrorion belongs to Plesiosauridae
Kaiwhekea belongs to Leptocleididae
Kronosaurus belongs to Pliosauridae
Leptocleidia belongs to Cryptoclidia
Leptocleidoidea is laced by Leptocleidia
Libonectes belongs to Elasmosauridae
Liopleurodon belongs to Pliosauridae
Manemergus belongs to Polycotylidae
Peloneustes belongs to Pliosauridae
Pliosauridae belongs to Pliosauroidea
Pliosaurus belongs to Pliosauridae
Polycotylidae belongs to Leptocleidia
Simolestes belongs to Pliosauridae
Styxosaurus belongs to Elasmosauridae
Thililua belongs to Leptocleididae
Tricleidus belongs to Cryptoclididae