dinosaurs

Workers transport a model of a dinosaur  at the exhibition 'World of Dinosaurs'  at a former lignite surface mining area   in Grosspoesna near Leipzig, central Germany, Wednesday, Oct. 29, 2014. More  than 50  exhibits of different species of dinosaurs  are on display  until  Nov. 30, 2014.  (AP Photo/Jens Meyer)

Jens Meyer/AP

Workers transport a model of a dinosaur at the exhibition ‘World of Dinosaurs’ at a former lignite surface mining area in Grosspoesna near Leipzig, central Germany

A visitor take a photo of a life size replica of a lizard crocodile 'Sauroshuchus' exhibited at the Art Science Museum during a media preview in Singapore on January 23, 2014. The exhibit called "Dinosaurs: from dawn to extinction " traces evolution of dinosaurs 600 years back in time. The exhibition will open to visitors from January 25 to July 27.

Roslan Rahman/AFP

A visitor takes a photo of a life-sized replica of the lizard crocodile ‘Sauroshuchus’ exhibited at the Art Science Museum, Singapore, during a media preview of Dinosaurs: From Dawn to Extinction. The exhibition runs from January 25 to July 27

A Tyrannosaurus rex takes a morning stroll with commuters in Martin Place on Wednesday in Sydney, Australia. In a world first, the Australian Museum presents "Tyrannosaurs: Meet the Family", an innovative, multimedia experience showcasing the newly-revised tyrannosaur family tree. With over 10 life-sized dinosaur specimens on display, including one of the oldest tyrannosaurs, Guanlong wucaii, the exhibition runs from 23 November 2013 to 27 July 2014. Showcasing a dramatic array of fossils and casts of tyrannosaur specimens, including neverbefore-seen specimens from China, "Tyrannosaurs: Meet the Family" is designed to provide a snapshot of dinosaur life and show how this group became the world's top predators with their massive skulls, powerful jaws and bone-crunching teeth.

James Morgan/Destination New South Wales/Getty Images

A man dressed as a Tyrannosaurus rex takes a morning stroll with commuters in Martin Place on Wednesday in Sydney, Australia to mark an exhibition being held at the Australian Museum.