Thylacosmilus is an extinct carnivorous mammal. It looked like the famous saber-toothed cats, but it was actually a marsupial, which means it is a close relative of kangaroos. This ferocious-looking animal probably had a pouch in which it carried its young.
Thylacosmilus lived in South America about eight million years ago when it was still separated from South America by water. There were no members of the cat family in South America, so Thylacosmilus evolved to fill in the void, evolving large canines much like the saber-toothed cats it resembled. Its lower jaw also evolved special bony extensions to protect the teeth when not in use. Once the land bridge between North and Central America formed, many of the marsupials gave way to placental mammals that filled the same ecological niche.
Jurassic Park Franchise
Thylacosmilus appears in Jurassic Park: Builder as a sliver creature in the Glacier Park.
Thylacosmilus was added as a Solid Gold pack Cenozoic snow creature on January 12th, 2018 in Jurassic World: The Game.