Puff Ball Mushroom

As children we would stomp on these Mushrooms to see the dark smoke fly out, I found a large one today, and it had a very odd shape, I turned it over and took a photo of the bottom. It did not look like the little puff ball mushrooms, I had seen before! I did see the spores/ dark powder fly out as I flipped it over to take the photo! Very odd looking Mushroom!