Ah, Venus! Goddess planet shrouded in mystery. About the only thing that astronomers knew about Venus in the '30s was that it was smaller than Earth, had a a bit more carbon dioxide in the atmosphere, and a heck of a lot of clouds. In pure run-with-it logic the clouds meant lot of water and the CO2 meant an atmosphere like prehistoric Earth. Conclusion: Carboniferous swamps over the whole planet inhabited by dinosaurs.
Also Munchkin villages. A pity that we now know that the planet has a surface temperature of 900° C, pressure that would flatten Don King's hair, and a constant rain of sulphuric acid.
Still, rates are reasonable.