Named By: Novas - 1996.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Theropoda, Coelurosauria, Maniraptoriformes, Alvarezsauroidea, Alvarezsauridae, Patagonykinae.
Species: P. puertai (type).
Size: Estimates to be 2 meters long.
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.