The vast majority of all living people on earth know what this means.
the vast majority of living people in the western world will tell you a wonderful story about adam eating an apple, which gets stuck in his throat, and thus a man's "adam's apple." a fair percentage of people you ask will tell you this story is in the bible, or at the very least that the fruit the bible says adam eats is an apple.
neither is true.
You need to think and release your mind from the chains of humanistic reasoning.
i think you need to release your mind from cultural assumptions and "common knowledge." instead, when we talk about the bible, let's start with the words that are actually on the page, before we go off half-cocked about whether something in the fossil records confirms something
that the bible doesn't actually say.
In other words, just read the passage and place it together with the common sense God gave you.
common sense does not say that snakes once had legs, according to genesis. there is no biological change indicated in the passage. simply a change in posture. that this
implies that the snake's legs fell off is your particular assumption or interpretation. the text says nothing on the matter.