Jaculinykus information

Jaculinykus; Temporal range: Late Cretaceous, 72–71 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Holotype specimen and skeletal reconstruction
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	Theropoda
Family:	†Alvarezsauridae
Subfamily:	†Parvicursorinae
Genus:	†Jaculinykus
Species:	†J. yaruui
Binomial name
	†Jaculinykus yaruui; Kubo et al., 2023

Jaculinykus (meaning "Jaculus claw") is an extinct genus of alvarezsaurid theropod dinosaur from the Late Cretaceous Baruungoyot Formation of Mongolia. The genus contains a single species, J. yaruui, known from a nearly complete articulated skeleton including bones of the skull. Jaculinykus is notable for its unique hand, which has a hypertrophied first digit and greatly reduced second digit, which is intermediate between the tridactyl hand of Shuvuuia and monodactyl hand of Linhenykus.^[1]

^ Kubo, Kohta; Kobayashi, Yoshitsugu; Chinzorig, Tsogtbaatar; Tsogtbaatar, Khishigjav (2023-11-15). "A new alvarezsaurid dinosaur (Theropoda, Alvarezsauria) from the Upper Cretaceous Baruungoyot Formation of Mongolia provides insights for bird-like sleeping behavior in non-avian dinosaurs". PLOS ONE. 18 (11): e0293801. doi:10.1371/journal.pone.0293801. ISSN 1932-6203. PMC 10651048.

[Jaculinykus-1] Kubo, Kohta; Kobayashi, Yoshitsugu; Chinzorig, Tsogtbaatar; Tsogtbaatar, Khishigjav (2023-11-15). "A new alvarezsaurid dinosaur (Theropoda, Alvarezsauria) from the Upper Cretaceous Baruungoyot Formation of Mongolia provides insights for bird-like sleeping behavior in non-avian dinosaurs". PLOS ONE. 18 (11): e0293801. doi:10.1371/journal.pone.0293801. ISSN 1932-6203. PMC 10651048.

Jaculinykus information

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