One of the most interesting episodes of the formation of the Old Earth mythology comes from an episode in real history known as the Bone Wars. Most people, old earthers and realists alike, are not even aware of this very significant event.
Here is a brief article about the Bone Wars. I highly recommend further research into this event:
O.C. Marsh and E.D. Cope: A Rivalry . Dinosaur Wars . WGBH American Experience | PBS
The Bone Wars is significant in many ways. Firstly, it is one of the biggest rushes to find fossils of all time. Secondly, almost everything the old earth mythology dictates about the dinosaurs comes from this episode. In fact many of the most popular dinosaurs known today were found and illustrated in this time and many of the ways the dinos are depicted originates from this time era, despite the fact many of the dinosaurs found by Cope and Marsh were in fact arranged the wrong way or elsewise are the same exact animal with a different name.
Comically, the modern scientists like to still tout this as one of the greatest proofs of evolution and thereby the old earth. There is however a huge flaw in that logic. The funny thing about the Bone Wars is you have two hard-nosed scientists competing against eachother for fame, funding, and bluntly a personal feud. In their mad quest to out do eachother Cope and Marsh rearranged dino skeletons incorrectly, placed the wrong parts on the wrong animals, artificially inflated the number of dinosaur species by simply naming the same animal multiple times, intentionally destroyed fossils, bribed eachothers workers, stole eachother's fossils, spied on eachother, ran smear campaigns discreditting eachother, and manipulated various scientific institutions and even the government. All of which taken together of course discredits themselves and their institutions which are still around today, and of course discredits much of the modern understanding of dinosaurs which is founded upon their works.
The Bone Wars proves indeed that it is no conspiracy, but rather is a well-documented fact that the Old Earth mythology is basically founded upon fraud, error, and arbitrary guesses and that its support mechanisms are moreso political and financial rather than scientific.