Often overlooked, cave paintings uncovered across the world could hold the secrets of our past.
From Australia to Peru, ancient etchings on the walls of caves show humans alongside great beasts resembling dinosaurs.
A painting from the Amazon rainforest basin shows dinosaurs surrounded by human beings.
Sculptures found in the El Toro Mountain depict dinosaurs seemingly reaching up to eat foliage from the upper branches of trees.
One theorist adamantly claimed the paintings were indisputable proof, writing: “If you think about it logically. The fact that these things exist is proof that it happened.
“How else would ancient man know what they look like?”
But scientists are skeptical over claims humans painted dinosaurs seen first hand.
The Protoceratops – one of the most heavily replicated dinosaurs – has been incorporated into sculptures in hundreds of countries.
Hongshan carvings dating back 4,000 years were also unearthed recently in China.
Some theorists firmly believe that for dinosaurs to have become such a prevalent part of art throughout so many different cultures – humans must have been alive to recount the tales of their existence.
Images of dinosaurs have existed in all forms of art – surviving changes in lifestyles and cultures.
The Holy Trinity Church in Georgia – dating back to the 1300s – has the vast creatures carved into the walls above window arches.
Herodotus, a historian from the 5th century BC, documented the existence of “winged serpents”.
He wrote: “There is a place in Arabia, situated very near the city of Buto, to which I went, on hearing of some winged serpents; and when I arrived there, I saw bones and spines of serpents, in such quantities as it would be impossible to describe.
“The form of the serpent is like that of the water-snake; but he has wings without feathers, and as like as possible to the wings of a bat.”
Dinosaur enthusiasts will be pleased to hear that scientists are looking into the possibility of potentially bringing back ancient creatures using DNA.
The wooly mammoth is the most heavily-discussed candidate – with pristine DNA have been preserved in ice.