"Dinosaurs and Other Prehistoric Creatures 2015 Wall Calendar" features 12 exciting, scientifically accurate illustrations of dinosaurs and other prehistoric creatures from the world's most significant centers of paleontology, and includes a bonus pull-out poster The American Museum of Natural History's collection of dinosaur fossils is among the largest and most scientifically important in the world. The Museum's collection includes the world's first "Tyrannosaurus rex," a famous dinosaur mummy, which contains fossilized dinosaur skin, and a nesting Oviraptor. AMNH paleontologists continue to make new discoveries, in yearly expeditions to Mongolia's Gobi Desert. The American Museum of Natural History is one of the world's preeminent scientific and cultural institutions. Since its founding in 1869, the Museum has advanced its global mission to discover, interpret, and disseminate information about human cultures, the natural world, and teh universe through a wide-ranging program of scientific research, education, and exhibition.