Ancient crustacean with formidable jaws unearthed in Early Triassic China
Researchers describe Yunnanocyclus fortis, a near-complete Early Triassic crustacean from the Guiyang biota in Guizhou, China, notable for preserved appendages and unusually robust mandibles that are highly mineralized. Three specimens reveal a broader distribution for cyclidans, extending into eastern Tethys, and support an early diversification after the Permian–Triassic extinction.