I adore how symbolic the mammals are. They climb up the dead dinosaur, so in a way they are "rising" to power on the death of the previous rulers of Earth. I won't even begin to comment on how amazing the rest is..
Again, I have to say that I love the details, and the lighting is very nice. You created the perfect atmosphere for this catastrophic event... And also the little rodents that are going to be the survivors and carry on life