Scientists Look to Uncover , the Last Dinosaurs <br />to Roam the Earth , Before Asteroid Hit.<br />'Newsweek' recently reported on some of the last dinosaurs that were around when a gigantic asteroid <br />struck the Earth and caused a mass extinction event.<br />This event wiped out nearly three quarters of all plant and animal species on the planet, including non-avian dinosaurs and pterosaurs, as well as many birds and mammals.<br />The last Age of the Dinosaurs took place <br />near the end of the Cretaceous Period <br />at a time referred to as the Maastrichtian.<br />We mostly hear about the last dinosaurs <br />that were alive in North America, because <br />some of the best and only rocks we've <br />discovered for this moment in time <br />are in Montana and the Dakotas. , Ashley Poust, Paleontologist from the San Diego <br />Natural History Museum, via 'Newsweek'.<br />That's only a very small bit of what <br />was likely a huge, unknown diversity <br />of 'last dinosaurs' across the globe, Ashley Poust, Paleontologist from the San Diego <br />Natural History Museum, via 'Newsweek'.<br />Two of the most famous dinosaur species <br />alive during the Maastrichtian were <br />the Triceratops and the Tyrannosaurus rex.<br />Remains of these well-known dino species <br />were found alongside a number of other <br />dinosaurs in the Hell Creek Formation. .<br />The heavily armored plant-eater, Ankylosaurus, the thick-skulled <br />plant-eater, Pachycephalosaurus, and the bird-like <br />"Chicken from Hell," Anzu, were also among the final dinosaurs.<br />The heavily armored plant-eater, Ankylosaurus, the thick-skulled <br />plant-eater, Pachycephalosaurus, and the bird-like <br />"Chicken from Hell," Anzu, were also among the final dinosaurs.<br />The heavily armored plant-eater, Ankylosaurus, the thick-skulled <br />plant-eater, Pachycephalosaurus, and the bird-like <br />"Chicken from Hell," Anzu, were also among the final dinosaurs.<br />These would've been some of the <br />very last non-avian dinosaurs on Earth; <br />most or all were probably in existence <br />when that giant asteroid fell out of the sky <br />66 million years ago and caused <br />massive environmental disturbances, Matthew Lamanna, Palaeontologist from the <br />Carnegie Museum of Natural History, via 'Newsweek'.<br />'Newsweek' reports that scientists also know that dinosaurs existed in Mongolia, Madagascar and <br />Antarctica around the time of the mass extinction event.
