Alvarezsauridae A clade in the dinosaur family tree. The entries below are classified within it. Ceratonykus 100–66 Mya · Mongolia Dzharaonyx 100–66 Mya · Uzbekistan Khulsanurus 100–66 Mya · Mongolia Mononykus 100–66 Mya · Mongolia Alnashetri 97 Mya · Argentina Alvarezsaurus 86–83 Mya · Argentina Albinykus 85.8–84.9 Mya · Mongolia Achillesaurus manazzonei 85 Mya · Argentina Mononychus 83.6–66 Mya Xixianykus zhangi 83 Mya · China Linhenykus 75–71 Mya · China Shuvuuia 75 Mya · Mongolia Ondogurvel 72.1 Mya · Mongolia Jaculinykus yaruui 72–71 Mya · Mongolia Parvicursor 72 Mya · Mongolia Elopteryx nopcsai 70–66 Mya Albertonykus 68.5 Mya · North America Trierarchuncus 66.2–66 Mya · Montana, USA