Illustration of an armored fish called Qilinyu that lived 423 million years.

Illustration of an armored fish called Qilinyu that lived 423 million years.

Illustration of an armored fish called Qilinyu that lived 423 million years. A fossil of the fish was unearthed in China’s Yunnan province. Photo: Dinghua Yang/Chinese Academy of Sciences via Reuters

October 21, 2016 8:36 AM (UTC+8)