The planet of Cretacia is the Chapter Homeworld of the Flesh Tearers Space Marines. The world is teeming with violent saurian life, similar to the dinosaurs of prehistoric Terra, and the Flesh Tearers supposedly hunt these beasts unarmoured and weaponless as sport. The oversized world of Cretacia was the fourth planet in a star system of seven worlds, and at first approach it appeared to be uninhabitable. Finding Cretacia perpetually shrouded in dense clouds, the Flesh Tearers effected landings on the planet to discover what lay below. What the Space Marines discovered was a planet to rival any Death World known in the galaxy due to its lethality to human life.