Inostrancevia

Inostrancevia was a real nightmare if it lived today. Inostrancevia was not a dinosaur nor a reptile, but it is a early mammal called the mammal-like reptiles. It belongs to a family known as  Gorgonopsia, and were top preadators of the Permian Period. During this period, they lived on one continent known as Pangaea, and it was only one ocean at the time.

Like other members of its family, Inostrancevia has saber-like teeth, which allows it to kill its pray. It was not known if Inostrancevia either lays eggs, or gives birth to live young like mammals do today. They don't even know if Inostrancevia and the rest of its family members had fur, or they were furless like other reptiles.

However, their reign would soon end when the worst mass extinction began at the end of the Permian Period. Although only a few life remain, Inostrancevia and its family members didn't survive the extinction due to most of its pray being extinct. However, with Inostrancevia and its family members gone, they left the gap for many animals to fill it. The only way you can see Instrancevia is the bones they left behind in the fossil record.