单词 | perissodactyl |
释义 | perissodactyladj.n. Zoology. A. adj. Designating or belonging to the mammalian order Perissodactyla, which comprises ungulates (both living and extinct) with an odd number of toes on each foot. Contrasted with artiodactyl adj.The order (formerly a suborder) includes horses, rhinoceroses, and tapirs. ΘΚΠ the world > animals > mammals > group Ungulata (hoofed) > order Perissodactyla (odd-toed ungulates) > [adjective] perissodactyl1848 perissodactylous1869 perissodactylic1888 perissodactylate1889 perissad1893 1848 R. Owen in Q. Jrnl. Geol. Soc. 4 i. 127 This group of odd-toed (perissodactyle) Pachyderms. 1848 R. Owen in Q. Jrnl. Geol. Soc. 4 i. 132 In the ‘Odontography’ I have termed the even-toed Ungulates ‘isodactyle’ and the odd-toed Ungulates ‘anisodactyle’: which terms I propose to change, at the suggestion of my esteemed and learned friend the Rev. Mr. Rigaud, M.A., into the more appropriate terms ‘artiodactyle’ and ‘perissodactyle’. 1849–52 Todd's Cycl. Anat. & Physiol. IV. ii. 922/2 The elephant..belongs to the..perissodactyle group of Pachyderms. 1872 Amer. Naturalist 6 250 It was represented as perissodactyl in general characters, but with peculiarities of dentition. 1912 Science 7 Aug. 595/2 The titanotheres, a perissodactyl group remotely related to horses tapirs and rhinoceroses. 1963 Science 6 Sept. 882/1 The perissodactyl genera Tapirus and Dicerorhinus in all probability extend back to the early Miocene or late Oligocene, about 25×106 years ago. 1968 Q. Rev. Biol. 43 96/1 The perissodactyle genus Equus. 2001 Nature 7 June 684 Groups of terrestrial vertebrates with the greatest capacity to reduce tough plant foods orally are also the most abundant and diverse, as exemplified by..extant artiodactyl and perissodactyl mammals. B. n. A perissodactyl mammal; an odd-toed ungulate. Contrasted with artiodactyl n. ΘΚΠ the world > animals > mammals > group Ungulata (hoofed) > order Perissodactyla (odd-toed ungulates) > [noun] > member of perissodactyl1854 1854 R. Owen Struct. Skeleton & Teeth in Orr's Circle Sci.: Org. Nature I. 242 The bony palate extends further back than in the perissodactyles. 1877 Amer. Naturalist 11 753 Of the mammalia three are Rodents,..one Proboscidian (Mastodon productus), four Perissodactyls, and eleven Artiodactyls. 1960 H. H. Swinnerton Fossils xxxix. 234 Some of the changes passed through are strikingly similar to those seen in the feet of the Eocene perissodactyles..and those in the teeth of certain artiodactyles. 1989 New Scientist 4 Feb. 71/1 The perissodactyls proliferated and diversified at first, but in the past 40 million years seem to have lost out to the even-toed ungulates (artiodactyls), in particular to the ruminants. 2002 G. M. Eberhart Mysterious Creatures I. 241/1 Current molecular studies show a close connection to both the proboscideans and the perissodactyls. DerivativesΘΚΠ the world > animals > mammals > group Ungulata (hoofed) > order Perissodactyla (odd-toed ungulates) > [adjective] perissodactyl1848 perissodactylous1869 perissodactylic1888 perissodactylate1889 perissad1893 1889 Nature 28 Nov. 84/1 Two species of the remarkable Perissodactylate genus Macrauchenia. ΘΚΠ the world > animals > mammals > group Ungulata (hoofed) > order Perissodactyla (odd-toed ungulates) > [adjective] perissodactyl1848 perissodactylous1869 perissodactylic1888 perissodactylate1889 perissad1893 1888 Amer. Naturalist 22 728 When..one examines the carpus and tarsus..it immediately appears that this is a well-marked perissodactylic type. ˌperissoˈdactylous adj. rare = A. ΘΚΠ the world > animals > mammals > group Ungulata (hoofed) > order Perissodactyla (odd-toed ungulates) > [adjective] perissodactyl1848 perissodactylous1869 perissodactylic1888 perissodactylate1889 perissad1893 1869 E. D. Cope in Proc. Acad. Nat. Hist. Philadelphia 250 In both Perissodactylous and Artiodactylous Mammalia, certain types develop their family character of canines at the earliest appearance of dentition. 1879 Amer. Naturalist 13 771g Its four anterior digits relate it to the lower or more generalized perissodactylous types. 1966 Systematic Zool. 15 47/1 There appeared as early as the Eocene the more advanced perissodactylous ungulates. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online June 2022). < adj.n.1848 |
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