Here's your "Jurassic Park" and "Lost World" in one FUN ROUTINE!
The effect starts off like the classic egg bag routine. Performer displays a rare egg (a fossilized Dinosaur Egg) and a green bag (the nest he found the egg in!)
He places an egg in the bag. The egg vanishes and reappears several times in the bag, like any standard egg bag routine. For the climax, the performer turns the bag inside out, and it changes into a caricature puppet of a Dinosaur. You can place your hand into the puppet and operate the mouth with your fingers, and even do a spot of vent if you have the ability. A comical and inventive variation of the egg bag effect.