T h e   M a m m o t h   F a u n a .  The tusks.   Certainly the tusks are the most remarkable feature of a mammoth. The tusks are the front teeth, changed by a special way, - the incisors. They are kept in a special tube growths of a skull - teethridges. The tusks of a males are turned up and sideways, the right tusk to the left, and the left tusk to the right, as if on a direction one to another. The tusks of mammoths are greater, than tusks of modern elephants. The tusks of the largest males could reach length of 4-4,5 ì  and weight up to 100 kilograms. Their diameter at the basis is about 18-19 centimetres. A mammoth actively used tusks during all his life for various works. Therefore the ends of tusks usually were erased on external edge and sometimes even broke.