奇迹秀山鱼 / Xiushanosteus mirabilis

My armoured fossil helps reveal early jawed fishes—distant family history behind your lunchtime chomp!
我披甲的化石，揭示早期有颌鱼的模样——也牵出你午饭咬一口背后的远古家史！

Sources
The oldest complete jawed vertebrates from the early Silurian of China
https://www.nature.com/articles/s41586-022-05136-8
Species reference
https://en.wikipedia.org/w/index.php?title=Xiushanosteus

Research context
Xiushanosteus preserves an early jawed-vertebrate body plan in unusual detail. Its mosaic of armor and appendage characters helps resolve the early diversification of jawed fishes.