In the mines of Dragon Story we can find the appropriately named dragon for August, the Tectonic Dragon. Collect 250 Tropic Minerals and this dragon will be on your island.

Tectonic Dragon
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Rarity: Super Rare
Type: Tropic, Stone, Red
Habitat: Tropic Strand, Stone Quarry, Red Rocks
Available at: Level 45
Buying Price: 1,500 Gold
Selling Price: 100 Coin
Incubation: 15 hours
Exp Gained: 780 Exp

"Rupturing with flames from the magmic core of the Island, Tectonic Dragons are the bringers of new lands to the Island's splendor. Their bodies cool to a black cracked stone when they touch the seawater where they trail magma to bring new lands and new life to all dragons."