Trilobite survived a fight with giant sea scorpion

摘要

ABOUT 453 million years ago, a trilobite might have escaped the claws of a hungry giant sea scorpion, a fossil suggests. Trilobites flourished in the oceans from around 522 million to 252 million years ago before going extinct. These hard-bodied arthropods resembled woodlice and ranged between about 1 millimetre and 70 centimetres in length. Oldrich Fatka at Charles University in the Czech Republic and his colleagues studied an unusual eye trauma in the fossilised head of a common trilobite species called Dalmanitina socialis and believe it survived a predator's attack.