If you think you know dinosaurs, think again! The world's largest and most unusual dinosaurs are on display at The Franklin Institute through April 15.


Giant Mysterious Dinosaurs provides an up-close look at GIGANTIC dinosaur skeletons and fossils from around the globe.many rarely seen in this country. View exotic skeletons, touch real fossils, see robotic dinos in action, and unearth your own discoveries in a hands-on dig pit. This brand-new exhibition is fascinating for all ages, and it is not to be missed. Marvel at the dinosaurs you never knew in Giant Mysterious Dinosaurs, only at The Franklin Institute!

The spectacular collection belongs to the world's leading dinosaur collector and popularizer, Don Lessem. "Dino" Don, a Philadelphia area resident, has excavated and re-created dinosaurs from Argentina to Mongolia, including the world's largest meat-eater and plant-eater. He was advisor to the movie Jurassic Park, and has written more than 50 books for children. Mr. Lessem's company, Exhibitrex, Inc., designed and built the Giant Mysterious Dinosaurs exhibition.



Meet Mamenchisaurus, (MA-men-CHEE-sore-us) the longest-necked (and most pea-headed) animal that ever lived. Get introduced to the world's largest meat-eating dinosaur skeleton.Giganotosaurus from Patagonia, 10% bigger than T' rex. See the world's largest dinosaur bone.the five-foot high backbone of the 100-ton Argentinosaurus.

Puzzle over the unicorn spike on the school-bus sized duckbilled dinosaur Tsintaosaurus (TZINT-ow-SORE-us), the two-foot long spines of the bizarre Amargasaurus, and the world's longest claw.nearly two feet long, from a still-unknown Mongolian giant meat-eater.