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.
By the Late Cretaceous, plesiosaurs had evolved (or been reduced) to two distinct groups. Elasmosaurus is the type genus for one of these groups, elasmosaurids which had very long necks with small heads, in contrast to the polycotylids which had short necks and large heads.