Named By: Novas - 1996.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Theropoda, Coelurosauria, Maniraptoriformes, Alvarezsauroidea, Alvarezsauridae, Patagonykinae.
Species: P. puertai (type).
Size: Roughly estimated around 2 meters long, but estimates vary widely.
Known locations: Argentina, Neuquen Province - Neuquen Formation, Portezuelo Member.
Time period: Turonian to Coniacian of the Cretaceous.
Fossil representation: Partial post cranial remains.
only known from partial remains, Patagonykus is
confirmed to have
been an alvarezsaur,
small bipedal dinosaurs that are thought to have
specialised in hunting insects. Dinosaurs like Patagonykus
thought to have been restricted to the lower stages of the upper
Cretaceous, however the discovery of Bonapartenykus
in 2012 has
revealed these forms of alvarezsaur survived in South America until the
last stages of the Cretaceous.
Patagonykus likely shared its ecosystem with dinosaurs such as Megaraptor, Unenlagia, Rinconsaurus and Antarctosaurus which have all been discovered in the Neuquen Formation.
Patagonykus puertai n. gen. et sp., and the phylogenetic relationships of the Alvarezsauridae (Theropoda, Maniraptora), by F. E. Novas. - In, VI Congreso Argentino de Paleontología y Bioestratigrafía, R. Cúneo (ed.), Museo Paleontológico Egidio Feruglio, Trelew Abstracts. - 1994.
- Anatomy of Patagonykus puertai (Theropoda, Avialae, Alvarezsauridae), from the Late Cretaceous of Patagonia. - Journal of Vertebrate Paleontology 17(1); 137–166. - F. E. Novas - 1997.