by there fossils
yes. It's not like it was discovered in space =D
1
A cave man and the scientist
there where many species of dinosaurs some of them still might not have been discovered yet
it's impossible to know exactly because not all the dinosaurs have been discovered yet.
2
It's impossible to know exact amount because not all the dinosaurs had been discovered yet.
Dinosaurs had not yet been discovered in Jesus' time. They lived and died millions of years earlier.
Dinosaurs were first discovered 60,0000 Years ago!
First off, plesiosaurs and pterodactyl were not dinosaurs. Plesiosaurs were their own group of reptiles more closely related to lizards than to dinosaurs. Pterodactyl was a pterosaur, which were a group separate from, but related to dinosaurs. Plesiosaurs are generally considered to have been discovered by Mary Anning. Pterosaurs are said to have been discovered by Cosmio Collini.
Yes, there was recently discovered forms of ancient life on mars that looked like dinosaurs
Dodo birds were when dinosaurs were on earth and ben discovered in 1861