Board Thread:Off Topic/@comment-26397825-20150713052232/@comment-26397825-20150727031322

If it's in the Mesozoic Era, it would count as a dinosaur. That's what we're saying. Anything not in the Mesozoic Era doesn't count as a dinosaur.

So any species of crocodile that developed in one of the periods from the Mesozoic Era would be a dinosaur, but any that didn't wouldn't be a dinosaur.