Happy Birthday Balloons 7 Orange Parasaurolophus Dinosaurs Postcard. An orange happy birthday cartoon dino Parasaurolophus with a big seven on a pink balloon and other bright colored balloons in a rainbow color circle postcard. This colorful happy birthday dinosaurs balloons party postcard is fully customizable! Change the age and add your image(s) and/ or text(s)! A happy birthday greetings Parasaurolophus dinosaur card for a little big dino!