amphicœlian

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• pelagosaur — Palæont. (ˈpɛləgəʊsɔː(r)) [ad. mod.L. pelagosaurus, f. Gr. πέλαγο ς sea + σαύρα lizard: see saurian.] A genus of fossil crocodiles with amphicœlian vertebræ, found in strata of the Jurassic age. in Ogilvie (Annandale) …   Useful english dictionary