Frog

Deep in a dried-up riverbed in Brazil, scientists uncovered a bizarre prehistoric mystery—twisted jawbones from a strange, long-lost animal unlike anything seen before. Dating back 275 million years, this creature, named Tanyka amnicola, belonged to an ancient lineage that should have already faded away, making it a kind of “living fossil” of its time.

A massive prehistoric snake discovered in India may rank among the largest ever to slither across Earth. Named Vasuki indicus, this ancient giant lived around 47 million years ago and is estimated to have stretched an astonishing 11 to 15 meters long—rivaling the legendary Titanoboa. Fossilized vertebrae unearthed from a lignite mine in Gujarat reveal a thick-bodied, powerful snake likely built for slow, stealthy ambush attacks, similar to modern anacondas.

For ages, wall lizards coexisted in three distinct color types, each with its own strategy for survival. Now, a powerful green variant is taking over. These dominant “Hulk” lizards are outcompeting the others, causing yellow and orange morphs to vanish. It’s a dramatic reminder that evolution can flip the script much faster than expected.

Ancient Earth once buzzed with enormous dragonfly-like insects, and scientists long thought high oxygen levels made their size possible. A new study overturns that idea, revealing insect flight muscles weren’t constrained by oxygen after all. Their breathing system has plenty of room to expand, meaning oxygen alone can’t explain their giant forms. Now, researchers are searching for new answers—like predators or physical limits of their bodies.

Nearly 100 million years ago, snakes weren’t the sleek, limbless creatures we know today—they still had hind legs and even a cheekbone that has almost vanished in modern species. A remarkably preserved fossil of Najash rionegrina from Argentina has reshaped how scientists think about snake origins, suggesting early snakes were large, wide-mouthed predators rather than tiny burrowers.