Once upon a time in an invisible nothing-land which was a special kind of nothing called, "Big-bang nothing" which is in fact a very complicated something, a universe with intelligibility, abscission, photosynthesis, mathematics, and specified complexity off the scale, emerged from a big-bang tornado in a junkyard that then later on led to some giraffes.
Meanwhile in a primordial swamp on a fictional primordial world, a fictional primordial less-than life, mudecule emerged from some self-assembling mud to later give you some blue whales and pine trees which are related to each other because they both have DNA, a bit like your dining room table must be related to my shed because they are both made of wood.
As for fairies, who needs them when we think of what a pre-bat transitional would have had to look like;
Fairytale? Yup - if the glove fits.