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  • See also Polacanthus.

    September 12, 2008

  • "A gigantic fossil saurian, found in the Wealden formation of Tilgate forest, chiefly characterized by a dermal ridge of large bony spines." (OED)

    "Hylaeosaurus... is the most obscure of the three animals used by Sir Richard Owen to first define the new group Dinosauria in 1842." (Wikipedia)

    September 5, 2008