Recent discoveries of new oviraptorosaurs revealed their high diversity from the Cretaceous
Period in Asia and North America. Particularly, at the family level, oviraptorids are among the
most diverse theropod dinosaurs in the Late Cretaceous of Mongolia and China. A new
oviraptorid dinosaur Gobiraptor minutus gen. et sp. nov. from the Upper Cretaceous Nemegt
Formation is described here based on a single holotype specimen that includes incomplete
cranial and postcranial elements. The most prominent characters of Gobiraptor are its …

Alvarezsaurid diversity has been markedly increased by recent discoveries from China.
However, the number of alvarezsaurid specimens in the Nemegt Formation of Mongolia
remained low since the initial report on Mononykus olecranus in 1993. Here we report three
new alvarezsaurid specimens from this formation, which were associated with each other
and also with multiple oviraptorid skeletons in a small multi-species assemblage. Two of the
alvarezsaurid specimens represent a new taxon, Nemegtonykus citus gen. et sp. nov., which …