Work in Progress - Stay Tuned!
In some early artwork for Pokemon Red and Green, Poke Balls are shown on the ground in two pieces while the Pokemon are in battle, rather than in the more familiar hinged form they take now. This may be a carryover from when Pokemon was known as Capsule Monsters, as the Poke Ball sprites in Generation I also do not show the button on the ball. In Generation II, Poke Balls split in half when capturing a Pokemon as part of their animation, while the anime had been using the hinge style since the very first episode.
Website is currently under-going reconstruction and will be available at a later date.