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.
Some experts think the earliest marine ancestors of the plesiosaurs were the nothosaurs, typified by the early Triassic Nothosaurus. As is often the case in nature, the plesiosaurs and pliosaurs of the late Jurassic and Cretaceous periods tended to be bigger than their early Jurassic cousins.