The key is half-life. A few fragments of dinosaur DNA surely remain, because half-life means there is a certain probability of decay over a particular unit of time. But enough to re-assemble a dinosaur? That's unlikely to the point of near-impossibility.
Even if we got really really lucky and found some that had spent most of its existence frozen deep in Antarctica or something, that would only open the potential of restoring a single dinosaur lineage and not the vast array of species depicted in Jurassic Park. That's total fantasy.
Even if we got really really lucky and found some that had spent most of its existence frozen deep in Antarctica or something, that would only open the potential of restoring a single dinosaur lineage and not the vast array of species depicted in Jurassic Park. That's total fantasy.