 It is one of the largest dromaeosaurids known, with only "Achillobator", "Dakotaraptor", and "Utahraptor" approaching or surpassing it in length.The type specimen of "Austroraptor cabazai", holotype MML-195, was recovered in the Bajo de Santa Rosa locality of the Allen Formation, in Río Negro, Argentina.The specimen was collected in 2002 by the team of Fernando Emilio Novas of the "Museo Argentino de Ciencias Naturales".