While drawing dinosaurs at school, Flinn discovers he doesn’t have enough markers. He goes into the closet and discovers Captain Stubble crying over the loss of his ship The Acorn to some mysterious Yo-ho-ho-ers. Flinn volunteers to help, as do his friends from class. They are transported to a ship and set off in search of The Acorn only to find it overrun with dinosaur pirates. The pirate diplodocus, stegosaurus, triceratops and pterodactyl are easily dispatched, but the evil Captain Tyrannosaurus Rex fights on. After a lengthy sword battle, Flinn prevails. He returns the ship to Captain Stubble and reappears in the back of the supply closet with his friends just in time for lunch. Ayto’s wild watercolor-and-ink illustrations of boldly colored backgrounds and exaggerated perspectives are a shot in the arm to Andreae’s slightly sedate tale. The pirate theme, the riotous art and the jagged-toothed, drooling dinosaurs will make this a sure hit with Me Hardies of all stripes. (Picture book. 4-7)