Gen 2:20 And Adam gave names to all cattle, and to the fowl of the air, and to every beast of the field; but for Adam there was not found an help meet for him.
Eve was found to be an help meet after the sheep, etc. proved unsuitable. Just read the book, dpardo.
The texts themselves are pretty decent evidence - they read just like the folktales of any other culture you'd care to name. They're equally supported by geological, archaeological, or biological evidence as, say, Maori or Norse creation stories, which is to say, not at all.