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A Jurassic bird with teeth, claws, and a surprising twist

So, this remarkably preserved, 150-million-year-old fossil from China reveals a bird with serrated dinosaur-like teeth and a curved, sickle-shaped claw. The newly identified Yuezhuornis yangyuanensis belonged to an early branch of birds, yet researchers say it may be the earliest known example of a bird lineage that lost the ability to fly. Its mix of bird and predatory dinosaur features shows that early bird evolution took more varied paths than scientists once thought. And here's the thing: some ancient birds may have adapted to life on the ground rather than becoming better flyers.
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