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Re: Ceratonykus oculatus
Alifanov, V.R. and Barsbold, R. (2009). _Ceratonykus oculatus_ gen. et sp.
nov., a new dinosaur (?Theropoda, Alvarezsauria) from the Late Cretaceous of
Mongolia. Paleontol. Zh. (Russ.) 2009, 1: 86â99.
Abstract: "A new dinosaur, _Ceratonykus oculatus_ gen. et sp. nov.
(Parvicursoridae, Alvarezsauria), from the Upper Cretaceous (Baruungoyot
Formation) of Mongolia is described based on a fragmentary skeleton. It
differs from other alvarezsaurians in many characters, including the short
femora, long tarsometatarsals, and considerably reduced third metatarsals. The
carpometacarpals contain spikelike bones. The natural endocast of the new
taxon shows large acoustic tubercles, the ventral position of the optic lobes
in the midbrain, and the absence of a vertical flexure at the brain floor. The
data obtained cast doubt on the taxonomic position of alvarezsaurians in the
The last sentence can be taken with a grain of salt; but it would be
interesting to know the rationale behind their claim. It doesn't appear to be
"alvarezsaurs-are-birds/birds-are-not-dinosaurs" boilerplate (the title implies
that the authors believe them to be dinosaurs, at least). Most of the paper is
in Russian, although the classification is in English (family Parvicursoridae,