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Hylaeosaur
Hylaeosaur Hy"l[ae]*o*saur`, Hylaeosaurus
Hy`l[ae]*o*sau"rus, n. [NL. hylaeosaurus, fr. Gr. ? belonging
to a forest (fr. ? wood) + ? a lizard.] (Paleon.)
A large Wealden dinosaur from the Tilgate Forest, England. It
was about twenty feet long, protected by bony plates in the
skin, and armed with spines.
Meaning of Hylaeosaur from wikipedia