The Giganotosaurus was originally created by (myself) JVM and Octavio1793 for Worldwide Designers' United's Prehistoric Pandemonium expansion in 2008 under Kangorilaphant's leadership before it was cancelled and the team disbanded. I later revisited the animal for solo release and King Hoopla and Zooasaurus Rex offered a new model, and DinoMan12 helped out as well, although I kept Octavio's skin.
Giganotosaurus is the heaviest carniverous dinosaur in the world and comes from Argentina, but I fail to remember what biome it enjoys.
It requires Zoo Tycoon 2 and the Zoo Tycoon 2: Extinct Animals expansion to use ingame.