"Meganeura monyi was a prehistoric insect of the Carboniferous period(300 million years ago), resembling and related to the present-day dragonfly. With a wingspan of more than 75 cm (2 feet) wide, it was the largest known flying insect species ever appear on earth..."
...Controversy has prevailed as to how insects of the Carboniferous period were able to grow so large. The way oxygen is diffused through the insect's body via its tracheal breathing system puts an upper limit on body size, which prehistoric insects seem to have well exceeded. It was originally proposed (Harlé & Harlé, 1911) that Meganeura was only able to fly because the atmosphere at that time contained more oxygen than the present 20 percent..."
"This theory was dismissed by fellow scientists, but has found approval more recently through further study into the relationship between gigantism and oxygen availability. If this theory is correct, these insect giants would have been perilously susceptible to falling oxygen levels and certainly could not survive in our modern atmosphere."
Earth doesn't have enough Oxygen in its atmosphere to support larger Bug-type Pokemon, so Pokemon must not take place on Earth. And if that's the case, how unlikely would it be that Humans would be present on this other planet as well, and with a culture and technology that is so similar to our own without influence from us here on Earth, who don't have the technology or ability to exert such an influence?
http://en.wikipedia.org/wiki/Meganeura
Note: Meganeura Monyi appears to be a little smaller than Yanmega, who weighs in at 113.5 lbs.
If Pokemon isn't on Earth, what explains Mew being in South America, and all those Indian Elephant Pokedex references?









