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.
Heterodontosaurus (meaning different toothed lizard) is a genus of small herbivorous dinosaur with prominent canine teeth which lived in the Early Jurassic of South Africa.nother feature is the specialization of teeth which gave rise to the animal's name. Most dinosaurs (and indeed most reptiles) have a single type of tooth in their jaws, while Heterodontosaurus had three. At the front of the jaw beside the beak were small teeth likely used for chopping off leaves and stems.