According to the theory of evolution, dinosaurs and man did not come close to living together. Current theory places the extinction of the dinosaurs around 65 million years ago. Man is supposed to have appeared on the scene, in one semi-erect form or another, only a few hundred thousand years ago, within the last three million years, at least (revised continuously).
According to creation theory, all animals and man were created about the same time and, according to the literalist theory of biblical creation, in a period of six days, roughly within the last six to seven thousand years. It is an unbridgeable gap.
So, is there real evidence that man and dinosaurs were either widely separated
or, conversely, contemporaneous creatures?
The evidence for the wide separation is theoretical only. The evolutionary
interpretations given to the fossil record, the supposed progressive development
of life forms through amphibian, reptile, mammal, etc., tend to preclude the
coexistence of man and dinosaur and the fact that they (dinosaurs) are not currently
found among us renders such speculations plausible. Evolutionists believe
that dinosaurs and man could not have lived together; therefor, they did not.
Such speculations are merely plausible however, not conclusive.
The evidence for the simultaneous existence of man and dinosaurs is legendary, literary and literal.
Stories of great dragons inhabit the legends of the world. If dinosaurs were only 'discovered' to have existed when the first fossils were found in the 1850's, these legends are remarkably prescient. The cave paintings of great horned and armour plated creatures, given scale by the contextual depictions of men, tend to support the reality of coexistence. Great literatures including the Tales of King Arthur and the oldest books of the Bible lend their support (Job 40, 41; Genesis 1:21 - which can be correctly translated: "... and God created great dragons").
The literal evidence for coexistence is quite compelling - to anyone not bound up in dogmatic evolutionary beliefs. Tracks of men and dinosaurs have been found in the same strata and these have been known and studied at least since the early nineteen-hundreds. The greatest of these sites is along the Paluxy River in North-central Texas. Often discounted as fraudulent and ignored by many scientists, trails of these tracks have been followed by researchers and have been found to continue underneath layers of rock, lifted and removed by heavy equipment, tending to erode charges of fraudulence. And the stamp issued by the Japanese government in 1978 with a plesiosaur-like creature on it was not a hoax or a fraud; it was the commemoration of an event which happened in 1977 in which this creature was caught in the nets of a Japanese fishing boat and documented with drawings and photos taken by a biologist. While marine reptiles are not 'dinosoaurs' by definition, the plesiosaur is thought to have existed and become extinct at the same time as their land dwelling cousins.
And sightings and stories of 'monsters' in oceans and lakes and swamps around the world persist, from Lake Champlain in New York State to Africa, giving rise to the possibility that man and some very large, reptilian creatures may, even yet, be contemporaries on this planet. Few there must be but only the true believer would say they could not exist with any conviction.
If in doubt, just ask a Japanese fisherman, I guess!