It knocked Matt Anderson down in a corridor before it arrived in the hub where Jess was. Becker and soldiers arrived to contain it, but it was led into Lester's office by Matt, who left it some water. Some time later Becker tranquilised it and it was moved back to the menagerie. "Edaphosaurus" is a Synapsid reptile from the Permian period, about 280 million years ago and has a sail like "Dimetrodon" and "Spinosaurus". It was included in Connor's Database. The "Edaphosaurus" resembled much of what people would believe today to be a "dinosaur", however it lived during the Permian period (about 280 million years ago) which is before most dinosaurs. It was very similar to the "Dimetrodon" in its appearance, except there were generally smaller. They were about a foot shorter than their cousin the "Dimetrodon"; about 8 feet long. Like most lizards in order to walk, its body moved from side to side. This is a characteristic of animals with legs on its side rather than under it. The "Edaphosaurus" also had a sail on its back, but it was smaller and shaped differently from that of the "Dimetrodon". "Edaphosaurus" were most active during the day. They were cold blooded animals which meant that their temperature was regulated by external factors (the sun, wind, rain). To get warm during the day these animals would tilt their "sails" towards the sun, and the blood going through this sail would heat up. "Edaphosaurus" were herbivores, meaning they only ate plants. This is evident in the teeth of the animal. "Edaphosaurus" teeth were much flatter than that of the "Dimetrodon", and its skull was much shorter overall which indicates they had smaller jaw muscles. The "Dimetrodon" skull was larger because of its big jaw muscles, and its sharp teeth that were used for shearing meat. The "Embolotherium" are a type of brontothere. Superficially they looked much like rhinos, although they were actually more closely related to horses. They have large but brittle horns which, in the series, are used for display during mating seasons. These beasts able to scare off big predators like "Andrewsarchus". The males have a heart shaped horn on top of their noses which is about and the females have a some sort of stump.