Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Therapsida
Cladus: Theriodontia
Cladus: Cynodontia
Cladus: Eucynodontia
Cladus: Probainognathia
Cladus: Prozostrodontia
Cladus: Mammaliaformes
Classis: Mammalia
Cladus: Theriimorpha
Cladus: Theriiformes
Cladus: Trechnotheria
Cladus: Zatheria
Subclassis: Theria
Cladus: Eutheria
Infraclassis: Placentalia
Magnordo: Boreoeutheria
Superordo: Laurasiatheria
Cladus: Scrotifera
Grandordo: Ferungulata
Mirordo: Euungulata
Ordo: Artiodactyla
Cladus: Artiofabula
Cladus: Cetruminantia
Cladus: Cetancodontamorpha
Subordo: Whippomorpha
Cladus: Cetaceamorpha
Infraordo: Cetacea
Cladus: Neoceti
Parvordo: Odontoceti
Cladus: Delphinida
Superfamilia: Delphinoidea
Familia: Delphinidae
Genus: Cephalorhynchus
Species: C. commersonii - C. eutropia - C. heavisidii - C. hectori
Name
Cephalorhynchus J. E. Gray, 1846
References
Cephalorhynchus 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.
Links
ION
Nomenclator Zoologicus
Vernacular names
日本語: イロワケイルカ属
Cephalorhynchus is a genus in the dolphin family Delphinidae.
Extant species
It consists of four species:
| Image | Scientific name | Common name | Distribution |
|---|---|---|---|
 |
Commerson's dolphin | C. commersonii | Argentina including Puerto Deseado, in the Strait of Magellan and around Tierra del Fuego, and near the Falkland Islands, near the Kerguelen Islands in the southern part of the Indian Ocean |
 |
Chilean dolphin | C. eutropia | coast of Chile |
 |
Heaviside's dolphin | C. heavisidii | coast of northern Namibia at 17°S and as far south as the southern tip of South Africa |
 |
Hector's dolphin | C. hectori | coastal regions of New Zealand |
The species have similar physical features—they are small, generally playful, blunt-nosed dolphins—but they are found in distinct geographical locations.
A phylogenetic analysis in 2006 indicated the two species traditionally assigned to the genus Lagenorhynchus, the hourglass dolphin L. cruciger and Peale's dolphin L. australis are actually phylogenetically nested among the species of Cephalorhynchus, and they suggest these two species should be transferred to the genus Cephalorhynchus. Some acoustic and morphological data support this arrangement, at least with respect to Peale's dolphin.[2]
According to a study in 1971, Peale's dolphin and the Cephalorhynchus species are the only dolphins that do not whistle (no acoustic data are available for the hourglass dolphin). Peale's dolphin also shares with several Cephalorhynchus species the possession of a distinct white "armpit" marking behind the pectoral fin.[3]
References
Wilson, D. E.; Reeder, D. M., eds. (2005). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. ISBN 978-0-8018-8221-0. OCLC 62265494.
May-Collado, Laura; Agnarsson, Ingi (2006). "Cytochrome b and Bayesian inference of whale phylogeny" (PDF). Molecular Phylogenetics and Evolution. 38 (2): 344–54. Bibcode:2006MolPE..38..344M. doi:10.1016/j.ympev.2005.09.019. ISSN 1055-7903. OCLC 441745572. PMID 16325433. Retrieved 2 February 2013.
Schevill, W.E.; Watkins, W.A. (15 January 1971). "Pulsed sounds of the porpoise Lagenorhynchus australis". Breviora. 366: 1–10. ISSN 0006-9698. OCLC 80876226.
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