Never-before-seen head of prehistoric, car-size 'millipede' solves evolutionary mystery

The face of a car-size, millipede-like creature — the largest arthropod ever to live — has finally been revealed thanks to two well-preserved fossils, a new study reports. The arthropod, , lived in forests near the equator between 346 million and 290 million years ago, during the late Paleozoic era. In the oxygen-rich atmosphere at that time, Arthropleura could grow to a massive . "Arthropleura … has been known since the 18th century, over 100 years, and we hadn't found a complete head," study first author , a paleontologist at...