Example, what if it wasn't EXACTLY those worms, but some other nearly identical species of worm that made it to being human billions of years later. Maybe these ones were blue and the other ones were black, and the blue ones died out and only the black ones that were really quite similar are the ones that made it but we don't have any DNA or chemical signature to show which is which.
The studies aren't saying that *anything* could be the beginning of symmetrical life forms with a gut, but that a worm very much like this is the earliest thing we've currently found that meets our requirements to have been that creature, and we just don't have the technology to analyze if it was THESE worms, or some nearly identical worm 100 miles away that was the first one. But it sure was ONE of them or something very much like it even longer ago, and this is the example we have on hand.
The studies aren't saying that *anything* could be the beginning of symmetrical life forms with a gut, but that a worm very much like this is the earliest thing we've currently found that meets our requirements to have been that creature, and we just don't have the technology to analyze if it was THESE worms, or some nearly identical worm 100 miles away that was the first one. But it sure was ONE of them or something very much like it even longer ago, and this is the example we have on hand.
