Reptilia - Dinosauria - Dromaeosauridae

Full reference: F. E. Novas and P. F. Puerta. 1997. New evidence concerning avian origins from the Late Cretaceous of Patagonia. Nature 387:390-392

Parent taxon: Unenlagiinae according to N. R. Longrich and P. J. Currie 2009

Sister taxa: Buitreraptor, Neuquenraptor, Rahonavis

Subtaxa: Unenlagia comahuensis, Unenlagia paynemili

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Ecology: ground dwelling carnivore