Extinct Animals Dodo Extinct since mid to late 17th century Lived on one tiny island Passenger Pigeon Once most common bird in North America Flocks with more than a billion birds took several days to pass by Last one died 1914 in a zoo Tasmanian Tiger Last known specimen died in captivity in 1936 Dinosaurs T-Rex Brachiosaurus How many Dinosaurs were there? Here is a list of all known dinosaurs: http://en.wikipedia.org/wiki/List_of_dinosaurs Trilobites 17 000 known species! Meganeura Giant dragonfly with a 2.5ft wingspan Armored Fish Dunkleosteus 20ft long, 2000lbs Megalodon Giant shark likely around 49ft long Mosasaurus 49ft long ocean lizard Pterosaurs Some had a 33ft wingspan Wooly Mammoth About the size of an elephant, but with fur 3ft long Sabre-toothed Tiger Weighed up to 880 lbs (Lions weigh 550lbs) Giant Ground Sloth 20ft tall standing on its hind legs Baluchitherium Largest land mammal ever known 25ft tall “Terror Birds” Flightless birds 10ft tall Countless more…. One day do a google search for extinct animals and see what you can find There are so many…and those are just the ones that we know about!