Novas & Puerta, 1997
Most unenlagiines have been discovered in Argentina. The largest was Austroraptor, which measured up to 5–6 m (16.4–19.7 ft) in length, making it also one of the largest dromaeosaurids. The subfamily is distinguished from other dromaeosaurids by a tail stiffened by lengthy chevrons and superior processes, sharp articulate claws, and a posteriorly oriented pubis. Their distinct anatomy from Laurasian dromaeosaurids was likely a consequence of the breakup of Pangaea into Gondwana and Laurasia, where the geological isolation of unenlagiines from their relatives resulted in allopatric speciation.
- "Unenlagiinae". Paleobiology Database. Retrieved 31 July 2013.
- Orozco, José (December 17, 2008). ""Bizarre" New Dinosaur: Giant Raptor Found in Argentina". National Geographic News. Retrieved 2017-12-12.
- GIANECHINI, FEDERICO A. (2011). "Unenlagiinae revisited: dromaeosaurid theropods from South America" (PDF). Anais da Academia Brasileira de Ciências (in English and Spanish). Ciudad Autónoma de Buenos Aires, Argentina: Brazilian Academy of Sciences. 83 (1): 163–195. doi:10.1590/s0001-37652011000100009. Retrieved 2017-12-12.
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