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Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Ordo: Therapsida
Cladus: Theriodontia
Subordo: Cynodontia
Cladus: Mammaliaformes
Classis: Mammalia
Subclassis: Trechnotheria
Infraclassis: Zatheria
Supercohort: Theria
Cohort: Eutheria
Cohort: Placentalia
Cladus: Boreoeutheria
Superordo: Laurasiatheria
Cladus: Ferae
Ordo: Carnivora
Subordo: Caniformia

Familia: Mustelidae
Subfamilia: Lutrinae
Genus: Aonyx
Species (3):
A. capensis - A. cinerea - A. congicus Name

Aonyx Lesson, 1827

Type species: Aonyx delalandi Lesson, 1827 (= Lutra capensis Schinz, 1821) by subsequent designation (Palmer, 1904).

Amblonyx Rafinesque, 1832
Anahyster Murray, 1861
Leptonyx Lesson, 1842
Micraonyx J. A. Allen, 1919
Paraonyx Hinton, 1921


Manual de Mammalogie: 157.
Aonyx in Mammal Species of the World.
Wilson, Don E. & Reeder, DeeAnn M. (Editors) 2005. Mammal Species of the World – A Taxonomic and Geographic Reference. Third edition. ISBN 0-8018-8221-4.
Aonyx Lesson, 1827 – Taxon details on Integrated Taxonomic Information System (ITIS).

Vernacular names
dansk: Fingerodder
English: Small-clawed otter
hrvatski: Beznokte vidre
ไทย: นากเล็ก, นากไร้เล็บ
Türkçe: Parmaklı samur
中文: 小爪水獺屬

Aonyx is a genus of otters, containing three species, the African clawless otter, the Congo clawless otter, and the Asian small-clawed otter. The word aonyx means "clawless", derived from the prefix a- ("without") and onyx ("claw/hoof").


Three species are currently recognised:[10][11]

Image Scientific name Common name Distribution
Aonyx capensis, male, Shamvura.jpg Aonyx capensis African clawless otter also known as the Cape clawless otter sub-Saharan Africa
Aonyx Congicus.jpg Aonyx congicus Congo clawless otter, also known as the Cameroon clawless otter, and formerly considered a subspecies of the African clawless otter Cameroon, Republic of the Congo, Democratic Republic of the Congo, Gabon, and possibly Angola, Burundi, Central African Republic, Equatorial Guinea, Nigeria, Rwanda, or Uganda.
Water Animal.jpg Aonyx cinereus Asian small-clawed otter, also known as the oriental small-clawed otter South and Southeast Asia.

Zoologists differ as to whether or not to include the Asian small-clawed otter in this genus, or in its own genus Amblonyx.[12][13] They also differ as to whether the Congo clawless otter is its own species, or conspecific with the African clawless otter.[14][15]

Type species by subsequent designation (Palmer 1904).[1]


Wozencraft, W. C. (2005). "Genus Aonyx". In Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 601–602. ISBN 978-0-8018-8221-0. OCLC 62265494.
Lesson, Réné-Primeverre (1827). "XCIIe Genre. Aonyx, Aonyx". Manuel de mammalogie, ou histoire naturelle des mammifères. Paris: Roret. p. 157. BHL page 54207625.
Palmer, T. S. (1904). Index generum mammalium. North American Fauna. Vol. 23. Washington: Government Printing Office. pp. 111, 830. doi:10.5962/bhl.title.39809.
Rafinesque, C. S. (1832). "Description of a New Otter, Lutra Concolor from Assam in Asia". Atlantic Journal and Friend of Knowledge. 1 (2): 62. BHL page 33519569.
Murray, Andrew (1860). "Contributions to the Fauna of Old Calabar—Mammals". Proceedings of the Royal Physical Society of Edinburgh. 2: 156–159.
Agassiz, L. (1846). Nomenclatoris Zoologici: Index Universalis. Solodurum: Jent et Gassmann. pp. 24, 27.
Lesson, R. P. (1842). "S.-Genre: Leptonyx, Less.". Nouveau Tableau du Règne Animal: Mammifères. Paris: Arthus Bertrand. p. 72.
Allen, J. A. (1919). "Preliminary Notes on African Carnivora". Journal of Mammalogy. 1 (1): 23–31. doi:10.1093/jmammal/1.1.23. JSTOR 1373716.
Hinton, Martin A.C. (1921). "Paraonyx, a new genus of clawless otter discovered by Capt. J. E. Philipps, M.C., in Central Africa". The Annals and Magazine of Natural History. Ser. 9. 7 (38): 194–200. doi:10.1080/00222932108632510.
"Aonyx". ASM Mammal Diversity Database. American Society of Mammalogists. Retrieved 20 August 2020.
"Search for "Aonyx"". IUCN Red List of Threatened Species. Retrieved 20 August 2020.
Larivière, Serge (2003). "Amblonyx cinereus". Mammalian Species. 720 (720): 1–5. doi:10.1644/0.720.1. JSTOR 3504404.
Srinivasulu, Chelmala; Srinivasulu, Bhargavi (2012). "Genus Aonyx Lesson, 1827". South Asian Mammals: Their Diversity, Distribution, and Status. New York: Springer. p. 310. doi:10.1007/978-1-4614-3449-8_3.
Nel, Jan A. J.; Somers, Michael J. (2013). "Genus Aonyx: Clawless Otters". In Kingdon, Jonathan; Hoffmann, Michael (eds.). Carnivores, Pangolins, Equids and Rhinoceroses. Mammals of Africa. Vol. 5. London: Bloomsbury. p. 103. ISBN 978-1-4081-2255-6.

Somers, Michael J.; Nel, Jan A. J. (2013). "Aonyx capensis African Clawless Otter". In Kingdon, Jonathan; Hoffmann, Michael (eds.). Carnivores, Pangolins, Equids and Rhinoceroses. Mammals of Africa. Vol. 5. London: Bloomsbury. pp. 104–108. ISBN 978-1-4081-2255-6.
Jacqeus, Hélène; Parnell, Richard; Alary, Franck (2013). "Aonyx congicus Congo Clawless Otter". In Kingdon, Jonathan; Hoffmann, Michael (eds.). Carnivores, Pangolins, Equids and Rhinoceroses. Mammals of Africa. Vol. 5. London: Bloomsbury. pp. 108–110. ISBN 978-1-4081-2255-6.

Larivière, Serge (2001). "Aonyx congicus". Mammalian Species. 650 (650): 1–3. doi:10.2307/0.650.1. JSTOR 3504516.
Larivière, Serge (2001). "Aonyx capensis". Mammalian Species. 671 (671): 1–6. doi:10.2307/0.671.1. JSTOR 3504541.

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