Strange, 300,000-year-old jawbone unearthed in China may come from vanished human lineage

Computer generated hualongdong Middle Pleistocene human skull

 Anthropologists in China have unearthed fragments of a lower jaw that may have belonged to an unknown human lineage. 

The bone, which is around 300,000 years old, belonged to a young teenager and features a unique mosaic of ancient and modern traits, according to a new study.