Extremely rare fossil of an ancient scorpion unearthed at China's Jehol Biota. The scorpion would've been a key species in the Cretaceous ecosystem, scientists say.

Pulmonoscorpius kirktonensis, a 70cm-long scorpion, lived in what we now know as Scotland 340 million years ago. At a length greater than that of the average pet cat, this terrifying creature used ...