How much years ago Archaeopteryx lived ?

In mezoic era huge lizards ruled the world.They are dinosaurs, dinosaurs were divided into two types ornithopods and theropods.Theropods had many dangerous and meat eating dinosaurs eg.Tryanosaurus,Allosaurus,Spinosaurus etc .Later these species turned smaller and smaller.Then came a feathery dinosaur called Archaeopteryx which was the ancestor of birds and the first bird on the blue planet