Answer: stegosaurs

AnswerCrossword Clue
STEGOSAURSMuseum of natural history exhibits
stegosaursSTEGOSAUR, a herbivorous dinosaur of the Jurassic period
stegosaursA small-headed quadrupedal herbivorous dinosaur of the Jurassic and early Cretaceous periods, with a double row of large bony plates or spines along the back