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chained_bear commented on the word polacanthus
"A genus of nodosaurid dinosaurs characterized by large bony spines that were probably arranged on both sides of the backbone; also a dinosaur of this genus.
N.B. Only known from a partial skeleton from the Wealden of the Isle of Wight, England, and perh. identical with Hylaeosaurus, from the Wealden of Sussex." (OED)
September 12, 2008