Английская Википедия:Eomysticetus

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Шаблон:Short description Шаблон:Italic title Шаблон:Automatic Taxobox

Eomysticetus is an extinct genus of baleen whale from the late Oligocene (Chattian) Chandler Bridge Formation of South Carolina.[1]

Taxonomy

Eomysticetus is a member of the family Eomysticetidae, which also includes Micromysticetus, Tohoraata, Tokarahia, and Yamatocetus.[2] There are two species of Eomysticetus, E. whitmorei and E. carolinensis, both from the Chandler Bridge Formation of South Carolina.[1]

Physical characteristics

The skull was around Шаблон:Convert in length.[3] Like more evolved baleen whales, its jaws had baleen instead of teeth, meaning that it could filter plankton with its baleen plates.[4][5][6][7] However, primitive baleen whales may have retained enamel coated teeth embedded in the gums, similar to modern sperm whales.[8] Baleen whales, as a group, may be sensitive to low-frequency sounds.[9]

Unlike modern baleen whales, Eomysticetus had a blowhole that was positioned ahead of the eyes, and the characteristics of its vertebrae and flipper bones are akin to those of archaeocetes like Basilosaurus.[4]

References

Шаблон:Reflist

Шаблон:Mysticeti Genera Шаблон:Taxonbar

  1. 1,0 1,1 Шаблон:Cite book (148Mb)
  2. Шаблон:Cite web
  3. Шаблон:Cite book
  4. 4,0 4,1 Шаблон:Cite web
  5. Y. Okazaki. 2012. A new mysticete form the upper Oligocene Ashiya Group, Kyushu, Japan and its significance to mysticete evolution. Bulletin of the Kitakyushu Museum of Natural History and Human History Series A (Natural History) 10:129-152
  6. Boessenecker, R. W., Fordyce, R. E. (2014), A new Eomysticetid (Mammalia: Cetacea) from the Late Oligocene of New Zealand and a re-evaluation of ‘Mauicetus’ waitakiensis. Papers in Palaeontology. doi: 10.1002/spp2.1005
  7. Robert W. Boessenecker and R. Ewan Fordyce (2015). "A new genus and species of eomysticetid (Cetacea: Mysticeti) and a reinterpretation of ‘Mauicetus’ lophocephalus Marples, 1956: Transitional baleen whales from the upper Oligocene of New Zealand". Zoological Journal of the Linnean Society. in press. doi:10.1111/zoj.12297.
  8. Шаблон:Cite journal
  9. Шаблон:Cite journal