Final cretasic fight

A nanotyranus is on the prow for his next dinner, he had lost his female in a battle against a tenontosaurus. He hill a baby edmontosaurus and he is preparing for eat it. But the ground is starting to move, the sound can hear for km. Is a T-Rex.
PALEONTHOLOGIST: In many cases the nano will only run away, but in this case he has lost his female. He can get the priviledge of just give this food, he is going to fight.
The nano attacks, using his speed as an advantage. But the nano is understimating his opponent. With the most strong bite T-Rex bites the neck of the nano and win the battle.
PALEONTHOLOGIST: But killing the nano isn´t enough fo the T-Rex, he needs to use it as an advertisement for any other nano: You are in my territory, and you aren´t welcome. I am going to kill you.