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Temporal range: Aptian
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Clade: Avialae
Order: Jeholornithiformes
Genus: Neimengornis
Wang et al., 2021
N. rectusmim
Binomial name
Neimengornis rectusmim
Wang et al., 2021

Neimengornis (meaning "Inner Mongolia bird") is an extinct genus of jeholornithiform avialans that lived in what is now China during the Early Cretaceous. It contains one species, N. rectusmim, which is known from a single specimen, holotype IMMNH-PV00122, discovered in the Jiufotang Formation of Liaoning.[1]


The generic name refers to the Inner Mongolia Natural History Museum where the holotype is stored, and the specific name means "straight minor metacarpal", combining the Latin rectus, meaning "straight", while "mim" is shortened from "minor metacarpal", referring to the uniquely straight minor metacarpals, different from other Jehol birds.[1]


  1. ^ a b Wang, J.; Wang, X.; Guo, B.; Kang, A.; Ma, F.; Ju, S. (2021). "A new jeholornithiform identified from the Early Cretaceous Jiufotang Formation in western Liaoning". Geological Bulletin of China (in Chinese). 40 (9): 1419–1427.