Killikaike blakei was collected from the Santa Cruz Formation in the far south of Argentina in January, 2005 and the type specimen consists of a remarkably well preserved face. The neurocranium is not present. The specimen was named for the locality where it was found Killik Aike Norte, on the estate of the Blake family.[1]
Perry et al. (2014) considered K. blakei to be a junior synonym of Homunculus patagonicus, which is also known from the Santa Cruz Formation.[2] However, Silvestro at al. (2017) considered Killikaike to be a distinct genus.[3] Kay & Perry (2019) continued to regard the species as synonymous.[4]
^Jonathan M.G. Perry; Richard F. Kay; Sergio F. Vizcaíno; M. Susana Bargo (2014). "Oldest known cranium of a juvenile New World monkey (Early Miocene, Patagonia, Argentina): Implications for the taxonomy and the molar eruption pattern of early platyrrhines". Journal of Human Evolution. 74: 67–81. Bibcode:2014JHumE..74...67P. doi:10.1016/j.jhevol.2014.03.009. hdl:10161/10782. PMID25081638.
