Archaeoceratops oshimai

Archaeoceratops oshimai darted briskly on elongated hind legs across the river valleys of Early Cretaceous East Asia, using its parrot-like beak to slice through tough fibrous plants. Its modest neck frill served primarily as an anchor for powerful jaw-closing muscles and visual signaling rather than heavy defensive armor. Exceptionally large eye sockets indicate keen vision, helping this diminutive forerunner of the horned dinosaurs detect stealthy theropod predators in low light.