SINCE 1828
hadrosaurid
noun
had·ro·sau·rid
| \ ˌha-drə-ˈsȯr-əd
\
\
plural hadrosaurids
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
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