A rendering of the Archopterus anjiensis, believed to be China's oldest eurypterid. [Photo by Yang Dinghua/For China Daily] Scientists have found a fossil of a rare species of sea scorpion in Zhejiang ...

Over 400 million years ago, Jaekelopterus rhenaniae—a colossal, human-sized “sea scorpion”—ruled Earth’s rivers long before dinosaurs emerged. This ancient predator’s rise and fall reveal how ...

As a group, invertebrates make up roughly 97% of animal species on Earth. In total, there may be more than 1.3 million individual species of invertebrates alive today, and countless more that are now ...

Around 400 million years ago, Earth’s oceans were dominated by massive sea scorpions. Scorpions, as we know them today, are already pretty terrifying — now imagine them being larger than basketball ...

In 1980, a palaeontologist announced the discovery of the largest ‘spider’ ever; except this eight-legged giant wasn’t a spider, but a sea scorpion that would have to wait 25 years for its true ...

Fossils of the mighty sea creatures, formally known as eurypterids, were rarely found in Australia until now THE discovery of the remnants of enormous ancient scorpions has left scientists with more ...

Asked to rank giant sea scorpions on a scale of one to terrifying, Russell Bicknell puts them at about an eight. "I suppose it depends how you define terrifying," Bicknell, a paleobiologist at the ...

Specimens of what appear to be the largest eurypterid species found in Australia could shed light on the sudden extinction of the massive arthropods. By Rebecca Dzombak Most modern scorpions would fit ...

Sea scorpions, ancient predators that patrolled Earth's marine and freshwater habitats hundreds of millions of years ago, are the focus of a sizable scientific mystery. Also known as eurypterids, ...

Almost half a billion years ago, way before the dinosaurs roamed, Earth’s dominant large predator was a sea scorpion that grew to 170cm, with a dozen claw arms sprouting from its head and a spike tail ...