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.
Stegosaurus is one of the most easily recognized dinosaurs of the Jurassic. The plates on its back and spikes on its tail make it one of the most unique creatures of the Mesozoic (Age of Dinosaurs). The Carnegie Quarry is so rich in fossils that multiple skeletons have been mounted from early excavations at Dinosaur.