Dinosaur fossils have been discovered on all seven continents. All Non-Avian species went extinct approximately 66 million years ago. There are roughly 700 known species that are now extinct. Birds of today are a kind of dinosaur because they share an ancestor with non-avian dinosaurs. Crocodiles and alligators are also considered living dinosaurs.
They emerged on Earth around 230 to 240 million years ago when the planet was hit by a massive asteroid. Nyasasaurus Parringtoni is believed to be the first one to have ever lived on Earth. It predates all others by more than 10 million years.
They all died more than 65 million years before humans inhabited Earth. Triceratops was the last known species to survive.
The first dinosaur bones ever found were those of the Megalosaurus and weren’t discovered until the 1820s. The term “dinosaur” was thought up in 1842, by a palaeontologist from England, Sir Richard Owen, it translates to “terrible reptile.” Based on bone evidence, scientists have estimated