Sagmatias

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Sagmatias

Sagmatias obliquidens
Classificazione scientifica
DominioEukaryota
RegnoAnimalia
PhylumChordata
ClasseMammalia
SottoclasseEutheria
OrdineCetacea
SottordineOdontoceti
FamigliaDelphinidae
GenereSagmatias
Cope, 1866
Specie

Sagmatias Cope, 1866 è un genere di cetacei che raggruppa quattro specie di delfini classificati tradizionalmente nel genere Lagenorhynchus. Le analisi del DNA mitocondriale hanno infatti indicato che alcune specie di delfini del genere Lagenorhynchus sono in realtà più strettamente imparentate con il genere Cephalorhynchus. Nel tentativo di risolvere questa situazione, è stato proposto di classificare nel genere Sagmatias le specie coinvolte.[1] Una recente analisi cladistica della famiglia Delphinidae ha fornito ulteriori prove morfologiche a supporto della separazione genetica di Sagmatias da Lagenorhynchus.[2] Le specie che sono state trasferite sono:

Tenendo conto di questa classificazione, i generi Sagmatias, Cephalorhynchus e Lissodelphis vanno a costituire la sottofamiglia dei Lissodelfinini (Lissodelphininae) in seno alla famiglia dei Delfinidi (Delphinidae).[1]

Note

  1. ^ a b R. Leduc, W. Perrin e E. Dizon, Phylogenetic Relationships among the Delphinid Cetaceans Based on Full Cytochrome B Sequences, in Marine Mammal Science, vol. 15, n. 3, 18 agosto August 1998, pp. 619-648, DOI:10.1111/j.1748-7692.1999.tb00833.x. URL consultato il 5 ottobre 2008 (archiviato dall'url originale il 4 giugno 2012).
  2. ^ Mizuki Murakami, Chieko Shimada, Yoshinori Hikida, Yuhji Soeda e Hiromichi Hirano, Eodelphis kabatensis, a new name for the oldest true dolphin Stenella kabatensis Horikawa, 1977 (Cetacea, Odontoceti, Delphinidae), from the upper Miocene of Japan, and the phylogeny and paleobiogeography of Delphinoidea, in Journal of Vertebrate Paleontology, vol. 34, n. 3, 2014, pp. 491-511, DOI:10.1080/02724634.2013.816720.
  3. ^ H. Shirihai e B. Jarrett, Whales, Dolphins and Other Marine Mammals of the World, Princeton Field Guides, 2006, pp. 205-207, ISBN 0-691-12757-3, OCLC 73174536.
  4. ^ H. Shirihai e B. Jarrett, Whales, Dolphins and Other Marine Mammals of the World, Princeton Field Guides, 2006, pp. 207-208, ISBN 0-691-12757-3, OCLC 73174536.
  5. ^ H. Shirihai e B. Jarrett, Whales, Dolphins and Other Marine Mammals of the World, Princeton Field Guides, 2006, pp. 202-205, ISBN 0-691-12757-3, OCLC 73174536.
  6. ^ The Vertebrates of British Columbia (PDF), su ilmbwww.gov.bc.ca, 2005. URL consultato il 5 ottobre 2008 (archiviato dall'url originale il 25 luglio 2008).
  7. ^ H. Shirihai e B. Jarrett, Whales, Dolphins and Other Marine Mammals of the World, Princeton Field Guides, 2006, pp. 209-211, ISBN 0-691-12757-3, OCLC 73174536.

Bibliografia

  • E. D. Cope, Third contribution to the history of the Balaenidae and Delphinidae, in Proceedings of the Academy of Natural Sciences of Philadelphia, 1866, pp. 293-300.
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