Reptilia - Dinosauria - Alvarezsauridae

Full reference: C. W. Andrews. 1913. On some bird remains from the Upper Cretaceous of Transslyvania. Geological Magazine, new series, decade 5 10(5):193-196

Parent taxon: Alvarezsauridae according to X. Xu et al. 2010

Sister taxa: Achillesaurus, Albinykus, Alnashetri, Alvarezsaurus, Kol, Parvicursorinae, Patagonykinae, Patagonykus

Subtaxa: Elopteryx nopcsai

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Ecology: ground dwelling carnivore