Dinosaurs where once the largest creatures known to man, some reaching 122 foot long, 5 storeys high and estimated at weight around 70 tons. These dinosaurs reached their size because they were supported by the early Earth’s higher levels of oxygen, when compared today.
Where did these dinosaurs once roam? Where they walking around your neighborhood, battling in your backyard? Just check out our infographic to find out more!
Originally posted 2017-01-01 14:45:48.