Order Cetacea Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1 723 743 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Inia geoffrensis (Blainville 1817) [Delphinus] geoffrensis Blainville 1817 , Nouv. Dict. Hist. Nat., Nouv. ed., Vol. 9: 151 . Type Locality: "sur la côte du Brésil .", probably upper Amazon River. Vernacular Names: Amazon River Dolphin . Synonyms: Inia rostratus (G. Cuvier 1812) ; Inia frontatus (G. Cuvier 1823) . Subspecies: : Subspecies Inia geoffrensis subsp. geoffrensis Blainville 1817 Subspecies Inia geoffrensis subsp. boliviensis d'Orbigny 1834 Subspecies Inia geoffrensis subsp. humboldtiana Pilleri and Gihr 1978 Distribution: Peru , Ecuador , Brazil , Bolivia , Venezuela , Columbia: Amazon, Negro, Mamore ( Bolivia ), and Orinoco River systems. Conservation: CITES – Appendix II; IUCN – Vulnerable. Discussion: Reviewed by Best and de Silva (1989) . Includes boliviensis , see Casinos and Ocaña (1979); but also see Pilleri and Gihr (1977) , who considered it a distinct species. Rice (1998:93) recognized I. g. geoffrensis (Amazon River Dolphin) , I. g. humboldtiana (Orinoco River Dolphin) and I. g. boliviensis (Bolivian River Dolphin) .