hadrosaurid

noun

had·​ro·​sau·​rid ˌha-drə-ˈsȯr-əd 

plural hadrosaurids

: 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

hadrosaurid adjective

… members of the hadrosaurid family apparently nurtured their young.

—Richard Monastersky, Science News, 22 Oct. 1988

Word History

First Known Use

circa 1893, in the meaning defined above

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