Collecta prehistory: foot replica of T-Rex Tyrannosaurus is a genus of carnivorous theropod dinosaurs. T-Rex belongs to the group of Tyrannosauridae and lived approximately seventy to sixty-six million years ago, during the late Cretaceous period, in the western part of present-day North America. Specifications: Color: dark brown Gender: junior, unisex Material: plastic Dimensions: 4 x 8 x 11.5 cm Age: from 4 years