The Philadelphia International Airport is the 9th busiest airport in the world. The Philadelphia Marketplace Food, Shops and services at the airport have a mind-boggling number of eateries, retail stores that sell everything that one can think of, and a number of newsstands.
(See a gallery of plesiosaur and pliosaur pictures.) Plesiosaurs (Greek for almost lizards) were large, long-necked, four-flippered marine reptiles that paddled their way through the oceans, lakes, rivers and swamps of the Jurassic and Cretaceous periods.
Thanks to its cameo appearances on the TV show Walking with Dinosaurs and and the YouTube favorite Charlie the Unicorn, Liopleurodon is one of the better-known marine reptiles of the Mesozoic Era. On the following slides, you'll discover 10 amazing facts about this undersea predator.