My Fish Pond Leads to the Devonian Period, and the Opening Is Handed over to the Country

[Prehistoric behemoths] [National Scientific Research] [Popular Science on Ancient Biology] Gu Ming never expected that there would be a space-time passage leading to 370 million years ago hidden under the dilapidated fish pond contracted by his family! When he dived to the bottom of the pond for the first time, what he saw was not mud and grass carp, but an ancient ocean belonging to the Late Devonian. Giant placoderms covered in bone armor skittered through the dark waters, and prehistoric predators several meters long occupied the top of the food chain. In the deeper trenches, unknown creatures lurked that had never been recorded in fossils. At the same time, the system prompt sounded—— [The deep ecological channel has been opened. [Current coordinates: Late Devonian. [Warning: Large predatory creatures are approaching. Faced with a secret that could change the entire human civilization, Gu Ming did not choose to secretly fish for money. He turned around and made a phone call. "Hello, I have something here... That may have to be handed over to the state." From that day on, a top-secret plan was officially launched. There are only limited crossing quotas and transport loads every day. There are no aircraft carriers, no nuclear submarines, and no endless modern equipment. Human beings can only start from a small fish pond and send steel, equipment and knowledge bit by bit to 300 million years ago. Base Zero, capture of ancient creatures, deep-sea scientific research, unknown species... Until one day, the system pops up the prompt again: [New space-time coordinates have been unlocked. [Target era: Late Cretaceous.