Ancient Swimmers Rewrite Life's Timeline

0:00It's April 7, I'm Cory with the story, and this is Canada News Today, local news powered by AI. Scientists just unearthed over 700 fossils in southwest China that pushed back the dawn of complex animal life by millions of years. These 539 million-year-old relics from the end of the ED Akron period show creatures ditching flat two-dimensional living for. Full three-dimensional action, swimming up through the water and hunting food. That's way earlier than the Cambrian explosion we all learned about in school. The real game changer? These fossils reveal bilateral symmetry, left and right sides mirroring each other, plus heads and anuses, traits we see in nearly every animal today. Before this, we only had tracks hinting at it, but now we've got the actual bodies making those marks. Paleontologists are buzzing because this bridges the gap between weird ED Akron blobs and Cambrian diversity. It settles the old rocks versus clocks debate, where DNA clocks said complex life started

1:01then, but fossils lagged behind. Experts like those at Oxford say it's our first clear peak at how modern animal-dominated oceans formed. Most scientists agree these are legit early complex critters, though a few nitpick the evidence. The sight near a UNESCO fossil spot lets researchers walk through geological layers, capturing that evolutionary pivot point. This flips our timeline and sparks big questions on why it exploded, maybe rising oxygen or genetic tweaks prime the pump. Ultimately, these ancient swimmers reshaped Earth's chemistry and set the stage for everything from starfish to us, proving life's pivot changed the planet forever.