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Any of various herbivorous ornithischian dinosaurs of the family Hadrosauridae of the Cretaceous Period, having a broad toothless beak, numerous teeth in the back of the jaw, a stiff tail, and sometimes a crest on the head. Also called duckbill, duck-billed dinosaur, hadrosaur.

[From New Latin Hadrosauridae, family name, from Hadrosaurus, type genus; see hadrosaurus.]

had′ro·saur′id adj.
References in periodicals archive ?
With respect to the Late Maastrichtian lambeosaurine faunas of Europe, the Serraduy humerus measures only between 40.
Recently, the discovery of gigantic lambeosaurine specimens in sediments of similar age (Fondevilla et al.
a new lambeosaurine dinosaur (Hadrosauridae) from the Latest Cretaceous of Aren (Huesca, Spain).
2009b): The last hadrosaurid dinosaurs of Europe: A new lambeosaurine from the uppermost Cretaceous of Aren (Huesca, Spain).
2013): Diversity, relationships, and biogeography of the lambeosaurine dinosaurs from the European archipelago, with description of the New Aralosaurin Canardia garonnensis.
Next to the hadrosaurs, identifiable by the fossilized mandibles found in the arechological sites of La Solana (Valencia) and Fontllonga (Lleida), were a lambeosaurine hadrosaurs yet to be defined, and a newly discovered lambeosaurine, the Arenysaurus ardevoli.