Kyouryuu Densetsu (cancelled Famicom RPG game; 1980s)
Kyouryuu Densetsu (恐竜伝説 Dinosaur Legend) is a NES/Famicom game that was being developed by HAL Laboratory but ended up cancelled and unreleased.
It would have been an RPG set in a world populated by dinosaurs that the hero would have to save. The hero would also have his own dinosaur friend who would evolve and become more powerful (possibly in a manner similar to Pokémon or EVO: Search For Eden).
Little else is known or available on the game apart from a preview with three screenshots.