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.
Physical features. 1  The Plesiosaurus was medium sized reptile. It could achieve an adult length of about 10 to 12 feet. 2  The head of the Plesiosaurus was very small as compared to the rest of its body. 3  Its neck was very long and slender. A small head was a necessity for the Plesiosaurus since it neck was delicate.