How do you beat Dino type dragons in the arena??

I cannot beat the triceratops dragon level 11. Not even with my champions, diamonds, or other Dino?s.

The wiki says against Dino use
Red, Stone, Tropic, Champion
And avoid using
Green, Cosmic, Gemstone, Soccer

A little off topic but ... the only dragons I use in the Battle arena are Fire, Crypt, Forest or Greenstone, Admirer, Apprentice and rarely Adrift Princess. I don't remember what I used to against Dino but I probably tried Crypt and Apprentice first, however, this maybe one that I used Adrift Princess on.

Champion or.Diamond Champion works most.every time.

Red or red and green