Definition of hadrosaurid
: hadrosaur duck-billed dinosaur Like ceratopsians, they too had closely packed chewing teeth, but by the time hadrosaurids evolved, the dentition consisted of relatively small teeth that were organized into a complex battery, all the better for grinding up vegetation. — David B. Weishampel, Natural History, June 1995
hadrosauridadjective … members of the hadrosaurid family apparently nurtured their young. — Richard Monastersky, Science News, 22 Oct. 1988
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First Known Use of hadrosaurid
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