Thescelosauridae A clade in the dinosaur family tree. The entries below are classified within it. Changmiania 145–100 Mya · China Doolysaurus huhmini 145–66 Mya · Asia Yueosaurus 145–66 Mya · China Jeholosaurus 125.75–125.68 Mya · China Zephyrosaurus 113 Mya · Montana, USA Fona herzogae 100.5–93.9 Mya Nevadadromeus 100–66 Mya · United States Orodromeus 100–66 Mya · North America Oryctodromeus 100–66 Mya · Montana, USA Bugenasaura 93.9–66 Mya Haya 85.7–72.2 Mya Koreanosaurus 81 Mya · South Korea Albertadromeus 77–76 Mya · Canada Parksosaurus 69.5 Mya · North America Thescelosaurus 69.42–66.04 Mya · North America