Tim Tebow just got a metaphoric slap in the face from the Colorado Rockies mascot ... who struck the QB's famous pose even though he's -- a DINOSAUR!! 

TMZ obtained the ironic pic that flies in the face of all Tebow holds dear -- Dinger the Triceratops ... Tebowing with several Rockies players in a Phoenix, AZ park Saturday.

The Elias Sports Bureau is getting back to us, but we're fairly confident this is the first time a dinosaur's been spotted Tebowing in the wild.

Evolutionists -- 1
Creationists -- 0

Your move, Timmy.