Group of stegosaurids, illustration
Illustration of a group of stegosaurids, dinosaurs closely related to the Stegosaurus. They were armour plated dinosaurs with bony spikes that lived during the Cretaceous period. Dinosaurs under the Stegosaurids include the Stegosaurus and the Kentrosaurus., by JOSE ANTONIO PENAS/SCIENCE PHOTO LIBRARY
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