Beginnings, Dinosaurs: Ornithischians ('bird-hipped'), Evolution of Life (4600 mya-Present), Jurassic Period (201-145 mya), Mesozoic Era (252-66 mya) Beginnings, Evolution of Life: Mesolithic era, Jurassic Period (201-145 mya), Dinosaurs: Ornithischians (‘bird-hipped’) September 26, 2025 — 0 Comments