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Encyclopedia > Cetotherium
Cetotherium
Fossil range: mid to late Miocene

Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Cetacea
Suborder: Mysticeti
Family: Cetotheriidae
Brandt, 1873
Genus: Cetotherium

Cetotherium was an extinct genus of cetacean that resembled modern whales. It lived in the early - mid Neogene period some 15 million years ago. Its predator was likely C. megalodon and predatory cetaceans. The Miocene Epoch is a period of time that extends from about 23. ... Scientific classification redirects here. ... For other uses, see Animal (disambiguation). ... Typical Classes Subphylum Urochordata - Tunicates Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders Subclass Monotremata Monotremata Subclass Marsupialia Didelphimorphia Paucituberculata Microbiotheria Dasyuromorphia Peramelemorphia Notoryctemorphia Diprotodontia Subclass Placentalia Xenarthra Dermoptera Desmostylia Scandentia Primates Rodentia Lagomorpha Insectivora Chiroptera Pholidota Carnivora Perissodactyla Artiodactyla Cetacea Afrosoricida Macroscelidea Tubulidentata Hyracoidea Proboscidea Sirenia The mammals are the class of vertebrate animals primarily characterized by the presence of mammary... Suborders Mysticeti Odontoceti Archaeoceti (extinct) (see text for families) The order Cetacea (IPA: , L. cetus, whale) includes whales, dolphins and porpoises. ... Families Balaenidae Balaenopteridae Eschrichtiidae Neobalaenidae Scientifically known as the Mysticeti, the baleen whales, also called whalebone whales or great whales, form a suborder of the order cetacea. ... In biology and ecology, extinction is the ceasing of existence of a species or group of species. ... For other uses, see Genus (disambiguation). ... Suborders Mysticeti Odontoceti (see text) The order Cetacea includes whales, dolphins and porpoises. ... Neogene Period is a unit of geologic time consisting of the Miocene, Pliocene, Pleistocene, and Holocene epochs. ... For other uses, see Megalodon (disambiguation). ... Suborders Mysticeti Odontoceti (see text) The order Cetacea includes whales, dolphins and porpoises. ...

Restoration of Cetotherium.

All modern mysticetes are large filter-feeding or baleen whale, though the exact means by which baleen are used differ among species (gulp-feeding with balaenopterids, skim-feeding with balaenids, and bottom ploughing with eschrichtiids). The first members of some modern groups appeared during the middle Miocene. These changes may have been a result of worldwide environmental change and physical changes in the oceans. A large scale change in ocean current and temperature could have initiated the radiation of modern mysticetes, leading to the demise of the archaic forms. Generally it is thought the four modern mysticete families have separate origins among the cetotheres, however this is only speculative. Modern baleen whales, [Balaenopteridae (rorquals and humpback whale, Megaptera novaengliae), Balaendia (right whales), Eschrichtiidae (gray whale, Eschrictius robustus), and Neobalaenidae (pygmy right whale, Caperea marginata) all have derived characteristics presently unknown in any cetothere. Cetotherium would have been around 12 meters or 40 feet long. Cetotherium is from the Miocene of Russia, and is only known by a single partial skull. Image File history File links Cetotherium. ... Image File history File links Cetotherium. ... Baleen hair is attached to the baleen plate Baleen (also called whalebone) is a substance made of keratin and is therefore stiff but somewhat elastic. ... Ocean (Okeanos, a Greek god of sea and water; Greek ωκεανός) covers almost three quarters (71%) of the surface of the Earth. ... Ocean currents (1911) Ocean currents (1943) An ocean current is any more or less continuous, directed movement of ocean water that flows in one of the Earths oceans. ...


References

  • Barry Cox, Colin Harrison, R.J.G. Savage, and Brian Gardiner. (1999): The Simon & Schuster Encyclopedia of Dinosaurs and Prehistoric Creatures: A Visual Who's Who of Prehistoric Life. Simon & Schuster.

See also

This prehistoric mammal-related article is a stub. You can help Wikipedia by expanding it.
The cetaceans (whales, dolphins and porpoises) are descendants of land-living mammals, and remnants of their terrestrial origins can be found in the fact that they must breathe air from the surface; in the bones of their fins, which look like huge, jointed hands; and in the vertical movement of... Wikipedia does not have an article with this exact name. ... Prehistoric mammals are a group of mammals that lived over 10,000 years ago. ...

 
 

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