Scientists were hoping to find signs of life when three dinosaur eggs were medically scanned in Kent on Thursday.
Owner Graham Bell has ruled out any prospect of finding DNA
The eggs - at least 70 million years old - were brought to England from China before exports were banned of the increasingly rare specimens.
But owner Graham Bell ruled out using DNA to recreate Jurassic life - and the predatory world of Jurassic Park film.
"I doubt if there is any DNA at all," he said. "But we hope to find some formation that would indicate life."
He said it was hoped that the scan would reveal a glimpse of unhatched dinosaurs inside the eggs.
"We hope that there may be an embryo in there," he said.
He said the egg would have been buried in very wet silt along the side of the river bank by the partly aquatic species.
"The dinosaur was one of the first mammals really," he said.
"It hadn't really achieved the status of being an aquatic or a land creature, but it always laid its eggs.
"We can't find out the incubation period which could have been more than a year.
"It is thought that some of the eggs could have been laid a year earlier, and others added to it."
Mr Bell keeps the three eggs encased in one piece of rock on display at his gem shop in the Pantiles in Tunbridge Wells.
He said: "We are more likely to find DNA in a piece of amber rather than a chunk of what is basically stone.
"But we hope the evidence will be that we may find some formation in it that would indicate life - so we keep our fingers crossed."