Leptoceratops (meaning 'little-horned face' and derived from Greek 'lepto-/λεπτο-' meaning 'small', 'insignificant', 'slender', 'meagre' or 'lean', 'kerat-/κερατ-' meaning 'horn' and '-ops/ωψ' meaning face), is a genus of primitive ceratopsian dinosaurs from the late Cretaceous Period (late Maastrichtian age, 66.8-66 Ma ago) of what is now Western North America. Their skulls have been found in Alberta, Canada and in Wyoming.