Agnolinet al. (2012) originally placedPatagonykus withinAlvarezsauridae, within the clade Patagonykinae as sister taxon toBonapartenykus.[2] Makovicky, Apesteguía and Gianechini (2012) found it to be in apolytomy withAlnashetri,Bonapartenykus, and a clade containing more deeply nested taxa such asLinhenykus,Mononykus andAlbinykus.[3] However, Xuet al. (2018) positioned it as a basalAlvarezsauroidea, sister taxon toPatagonykus andAchillesaurus, which was also recovered by Fowleret al. (2020).[4][5]Patagonykus has also been recovered as sister taxon toBonapartenykus and Alvarezsauridae by Qinet al. (2019), and sister taxon to onlyPatagonykus outside of Alvarezsauridae by Averianov & Lopatin (2022a) and Averianov & Lopatin (2022b).[6][7][8]
A phylogenetic analysis conducted by Fowleret al. (2020) is reproduced below.[5]
^Makovicky, P. J.; Apesteguía, S. N.; Gianechini, F. A. (2012). "A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina".Fieldiana Life and Earth Sciences.5:90–98.doi:10.3158/2158-5520-5.1.90.S2CID129758444.
^Averianov AO, Lopatin AV (2022). "A re-appraisal ofParvicursor remotus from the Late Cretaceous of Mongolia: implications for the phylogeny and taxonomy of alvarezsaurid theropod dinosaurs".Journal of Systematic Palaeontology.19 (16):1097–1128.doi:10.1080/14772019.2021.2013965.S2CID247222017.
F. E. Novas. 1994.Patagonykus puertai n. gen. et sp., and the phylogenetic relationships of the Alvarezsauridae (Theropoda, Maniraptora).VI Congreso Argentino de Paleontología y Bioestratigrafía, R. Cúneo (ed), Museo Paleontológico Egidio Feruglio, Trelew.
Novas, F. E. 1997. Anatomy ofPatagonykus puertai (Theropoda, Avialae, Alvarezsauridae), from the Late Cretaceous of Patagonia.Journal of Vertebrate Paleontology 17(1); 137–166.
Novas, F. E. andMolnar, R. E. (eds.) 1996. Alvarezsauridae, Cretaceous basal birds from Patagonia and Mongolia.Proceedings of the Gondwanan Dinosaur Symposium, Brisbane.Memoirs of the Queensland Museum 39(3):iv + 489–731; 675–702.
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