Cross Breeds

Extinct animals that would be able to co-exist well together.?

What 2 or 3 animals, that are extinct, would be able to co-exist together Preferable a bird, fish, and land animal. Ie. The bird eats the fish, and the land animal eats plants. We originally had a dodo and a tasmanian tiger. But we found that they would not be able to live together. Because the dodo cant fly. ~Thanks in advance

Public Comments

1. In metropolitan areas its not a practical question. (I live in such an environment)