. ^ Camptosaurus: One of the first of the ornithischian dinosaurs, which lived in late Jurassic and early Cre- taceous times. All of the later ar- mored dinosaurs, duck-bills, and horned forms were derived from an- cestors something like this five- to eight-foot plant-eating dinosaur

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Keywords: ., bookcentury1900, bookpublishernewyork, booksubjectreptilesfossil