| 释义 |
Definition of Cetacea in English: Cetaceaplural nounsɪˈteɪʃəsiˈtāSH(ē)ə Zoology An order of marine mammals that comprises the whales, dolphins, and porpoises. These have a streamlined hairless body, no hindlimbs, a horizontal tail fin, and a blowhole on top of the head for breathing. 〔动〕鲸目。参见 M YSTICETI，ODONTOCETI See also Mysticeti, Odontoceti Example sentencesExamples - However, in a phylogenetic analysis of the complete mitochondrial genome of the Jamaican fruit bat it appeared more closely related to cetferungulates, a clade including Cetacea, Artiodactyla, Perissodactyla, and Carnivora.
- The order Cetacea comprises two extant sub-orders and one extinct sub-order.
- The Cetacea are one of the most distinctive and highly specialized orders of mammals.
- The order Sirenia is composed of manatees and dugongs, and the order Cetacea includes whales, dolphins, and porpoises.
- They found that the hypothesis that a monophyletic Mesonychia is the sister taxon of Cetacea, and a monophyletic Artiodactyla is the extant sister taxon of Cetacea was significantly congruent with the stratigraphic record.
OriginModern Latin (plural), from Latin cetus, from Greek kētos 'whale'. Definition of Cetacea in US English: Cetaceaplural nounsiˈtāSH(ē)ə Zoology An order of marine mammals that comprises the whales, dolphins, and porpoises. These have a streamlined hairless body, no hind limbs, a horizontal tail fin, and a blowhole on top of the head for breathing. 〔动〕鲸目。参见 M YSTICETI，ODONTOCETI See also Mysticeti, Odontoceti Example sentencesExamples - The Cetacea are one of the most distinctive and highly specialized orders of mammals.
- However, in a phylogenetic analysis of the complete mitochondrial genome of the Jamaican fruit bat it appeared more closely related to cetferungulates, a clade including Cetacea, Artiodactyla, Perissodactyla, and Carnivora.
- The order Cetacea comprises two extant sub-orders and one extinct sub-order.
- They found that the hypothesis that a monophyletic Mesonychia is the sister taxon of Cetacea, and a monophyletic Artiodactyla is the extant sister taxon of Cetacea was significantly congruent with the stratigraphic record.
- The order Sirenia is composed of manatees and dugongs, and the order Cetacea includes whales, dolphins, and porpoises.
OriginModern Latin (plural), from Latin cetus, from Greek kētos ‘whale’. |