If we were to consider just for one moment that God did indeed "create" all life on Earth, why would anyone think that He had to have "created" all life forms at the same time? Would it not be possible that God started off with those earlier life forms, and then over various periods of time (separated by lengthy periods) He "created" different life forms? What you call "explanations" are merely guesses of what happened which fit the "evidence" as humans understand the "evidence" Guesses can never be proof as any scientist worth their degree will attest.
Guesses.... all the work that Paleontologists have done is all just guesses. Just a wave of your hand simply dismisses it.
Ok have a good night.
Starting with the chaos of the big bang
Moving on to the point where light came into being
Then solid matter condensed from the 'liquid' plasma.
The solids and fluids were gathered and separated
Plants came into being
Then swimming creatures
Then (dinosaurs which became) birds
Then mammals
And finally, that Johnny come lately, Man
Pretty much the same sequence that Physics and TOE have.
The main difference between the stories the Bible and Modern Science tell is the timescale. I don't know how long one of God's days is, but I do note that the Seventh Day doesn't end with "And the evening and the morning were the nth day" like days 1-6.
I assert that we are still in the Seventh Day as the Bible never says it ended...
And the Bible deals with what and why, while Modern Science deals with what and how.