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The Collaborative International Dictionary
Teleosaur

Teleosaur \Te`le*o*saur"\, n. (Paleon.) Any one of several species of fossil suarians belonging to Teleosaurus and allied genera. These reptiles are related to the crocodiles, but have biconcave vertebr[ae].

Wiktionary
teleosaur

n. (context paleontology English) Any of several species of fossil saurians belonging to ''Teleosaurus'' and allied genus. These reptiles are related to the crocodiles, but have biconcave vertebrae.