This lifeform is generally found west of the Continental Divide in North America This lifeform has been extinct for over 20,000 years.

Triceratops has been found in the northern Rocky Mountains of both Canada and the United States. Triceratops developed during the Cretaceous Period and was one of the last of the dinosaurs to become extinct.  

This three-horned monster was up to thirty feet in length, and was certainly not afraid of Tyrannosaurus rex. The large head plate, two long forward pointing horns, and short rhino-like horn made this a very difficult animal to attack.

Ceratopsidae is a family called Horned Faces that lived in the Cretaceous period. Ceratopsian usually had horns on their noses or foreheads. These plant eaters were usually less than twenty- two feet long.

Bird Hipped Dinosaurs (Order Ornithischia) contain several unusual small dinosaurs plus several large dinosaurs that are familiar to the general public. These are usually divided into four different Sub-orders: Ornithopodia, Stegosauria, and Ankylosauria, and Ceratopsia.

(Some scientists would place the living birds in some close relationship to this group.)

Reptiles (Class Reptilia) are an ancient group of scaled  chordates. These scales may be permanently joined, as in the  turtles, or flexible, as in the snakes. Reptiles are land-based. Their eggs are laid on land and the young are air breathing.

Backboned Animals (Phylum Chordata) are the most advanced group of animals on earth. These animals are characterized by having a spinal cord or backbone. Most members have a clearly defined brain that controls the organism through a spinal cord. Fish, amphibians, reptiles, birds, and mammals are in this phylum.

Currently, some taxonomists believe that the fish should be divided into two groups (sharks and regular fishes) and that there are some other primitive groups in the phylum such as hagfish or lampreys.

Animal Kingdom contains numerous organisms that feed on other animals or plants. Included in the animal kingdom are the lower marine invertebrates such as sponges and corals, the jointed legged animals such as insects and spiders, and the backboned animals such as fish, amphibians, reptiles, birds, and mammals.