ankylosaur: having the back covered with thick bony plates; thought to have walked with a sprawling gait resembling a lizard's
armored dinosaur: dinosaurs having bony armour
jacob: (Old Testament) son of Isaac; brother of Esau; father of the twelve patriarchs of Israel; Jacob wrestled with God and forced God to bless him, so God gave Jacob the new name of Israel (meaning `one who has been strong against God')