Genus: Jaculinykus KUBO, KOBAYASHI, CHINZORIG & TSOGTBAATAR, 2023
Etymology: Greek mythoogy, Jaculus, a tiny dragon, and Greek, onykus, "claw."
Species: yaruui KUBO, KOBAYASHI, CHINZORIG & TSOGTBAATAR, 2023
Etymology: Mongolian, yaruu, "speedy."
Holotype: MPC-D 100/209
Locality: Nemegt Locality, Ömnögov (South Gobi), Mongolia.
Horizon: Baruungoyot (or Barun Goyot) formation.Formation.
Biostratigraphy:
Age: Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material: Nearly complete skull (missing vomers, nasals, postorbitals, and supraoccipitials), 8th or 9th cervical vertebra, posterior dorsal vertebrae, 7 anterior caudal vertebrae, sternum, furcula, righ manual phalanx II-2, right manual ungual, ilia, pubis, femora,tibia, and left fibula, metatarsals, unguals, phalanges, humeri, radii, ulnae, metacarpals, and ungual.