Around 400 million years ago, Earth’s oceans were dominated by massive sea scorpions. Scorpions, as we know them today, are ...

Discovered 25 years ago, a 444-million-year-old marine arthropod fossil stumped paleontologists, as they couldn’t identify its exact species. Sarah Gabbot, who originally discovered the specimen ...

the V-shaped lines were clearly there on the fossil. There was no mistaking what they meant. She’d seen them before, on bones that were butchered with stone tools about 1.8 million years ago ...