There wasn't a myriad of languages at the time. There was one language. And it's not like Adam had to name every microbe, just 'Beast of the Field' and 'Bird of the Sky'.

[Replying to 'Adam naming all the animals is clearly fictional']Their names had to come from somewhere. It does not give a time limit on the naming of the animals, and even then, they certainly had not divided into subspecies at that point.

The evidence does not preclude the Garden story. In fact, given the fact that abiogenesis does not happen means that God had to create life directly.