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cetacea    
n. 鲸类

鲸类

Cetacea
n 1: an order of Eutheria [synonym: {Cetacea}, {order Cetacea}]

Cetacea \Ce*ta"ce*a\, n. pl. [NL., from L. cetus whale, Gr. ?.]
(Zool.)
An order of marine mammals, including the whales. Like
ordinary mammals they breathe by means of lungs, and bring
forth living young which they suckle for some time. The
anterior limbs are changed to paddles; the tail flukes are
horizontal. There are two living suborders:
(a) {The {Mysticete} or whalebone whales, having no true
teeth after birth, but with a series of plates of
whalebone [see {Baleen}.] hanging down from the upper jaw
on each side, thus making a strainer, through which they
receive the small animals upon which they feed.}
(b) {The {Denticete}, including the dolphins and sperm whale,
which have teeth. Another suborder ({Zeuglodontia}) is
extinct. The {Sirenia} were formerly included in the
Cetacea, but are now made a separate order.}
[1913 Webster]


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  • Cetacean - Wikipedia
    Cetaceans are marine mammals belonging to the infraorder Cetacea ( sɪˈteɪʃə ), a secondarily aquatic clade under the order Artiodactyla that include whales, dolphins, porpoises and extinct groups such as Basilosaurus
  • Cetacean | Life Span, Evolution, Characteristics | Britannica
    cetacean, (order Cetacea), any member of an entirely aquatic group of mammals commonly known as whales, dolphins, and porpoises The ancient Greeks recognized that cetaceans breathe air, give birth to live young, produce milk, and have hair —all features of mammals
  • Cetaceans | The Marine Mammal Center
    Marine mammals in the cetacean family include whales, dolphins and porpoises These animals are completely aquatic, meaning they spend all of their time in the ocean and cannot survive on land
  • Cetacean - Examples, Characteristics, Lifespan, Habitat, Pictures
    The term Cetacea is derived from the Latin word Cetus, which means’ a huge fish or a sea monster’ and indicates the unusually bulky bodies of these mammals Cetaceans are fully carnivorous and feed on plankton, shrimp, squid, octopus, prawns, fish, and small marine mammals
  • List of cetaceans - Wikipedia
    Cetacea is an infraorder that comprises the 94 species of whales, dolphins, and porpoises It is divided into toothed whales (Odontoceti) and baleen whales (Mysticeti), which diverged from each other in the Eocene some 50 million years ago (mya)
  • Cetacea - IWC
    Taxonomy classifies whales, dolphins and porpoises as the Order of Cetacea (known commonly as cetaceans) and divides this group into two suborders: Within each of these suborders are individual groups or ‘families ’ Each species has a scientific name and a common name
  • Introduction to the Cetacea - University of California Museum of . . .
    Although hunting and other human activities have endangered most cetacean species, the outlook for many is improving Whales are highly specialized for life in the water Most species are marine, but dolphin species are found in the Yangtze, Amazon, Paraná, Indus and Ganges Rivers
  • Cetacean - Marine Mammals, Evolution, Classification | Britannica
    whale, any of the larger species of aquatic mammals belonging to the order Cetacea The term whale can be used in reference to any cetacean, including porpoises and dolphins, but in general it is applied to those more than 3 metres (10 feet) long
  • Cetacea - an overview | ScienceDirect Topics
    Cetacea is defined as the order of mammals that includes whales, dolphins, and porpoises, which are descendants of marine mammals adapted for life in aquatic environments





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