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词汇 notoungulate
释义

Definition of notoungulate in English:

notoungulate

noun ˌnəʊtəʊˈʌŋɡjʊlətˌnōdōˈəNGɡyələt
  • An extinct hoofed mammal of a large and varied group that lived in South America throughout the Tertiary period, finally dying out in the Pleistocene.

    南美有蹄动物

    Order Notoungulata: many families

    Example sentencesExamples
    • Also, Paedotherium, a hare-sized notoungulate that is one of the most abundant mammals of the Pampean Region, has been found in association with burrows.
    • That is, instead of the relatively orderly pattern of cusps possessed by most mammals, notoungulates have drawn out the cusps into long, messy arcs.
    • The land bridge allowed the South American armadillo, porcupine, opossum, and ground sloths to colonize the north, as well as the unique South American notoungulates.
    • Note that notoungulates, too, have sharp rostra, inflated auditory bullae, and sagittal crests.
    • Purely by way of example, the image at left shows the nomenclature used for notoungulates, an extinct group of ungulates endemic to the early Cenozoic of South America.

Origin

Early 20th century: from modern Latin Notoungulata, from Greek notos 'south' + Latin ungula 'nail'.

Definition of notoungulate in US English:

notoungulate

nounˌnōdōˈəNGɡyələt
  • An extinct hoofed mammal of a large and varied group that lived in South America throughout the Tertiary period, finally dying out in the Pleistocene.

    南美有蹄动物

    Order Notoungulata: many families

    Example sentencesExamples
    • Note that notoungulates, too, have sharp rostra, inflated auditory bullae, and sagittal crests.
    • Purely by way of example, the image at left shows the nomenclature used for notoungulates, an extinct group of ungulates endemic to the early Cenozoic of South America.
    • The land bridge allowed the South American armadillo, porcupine, opossum, and ground sloths to colonize the north, as well as the unique South American notoungulates.
    • Also, Paedotherium, a hare-sized notoungulate that is one of the most abundant mammals of the Pampean Region, has been found in association with burrows.
    • That is, instead of the relatively orderly pattern of cusps possessed by most mammals, notoungulates have drawn out the cusps into long, messy arcs.

Origin

Early 20th century: from modern Latin Notoungulata, from Greek notos ‘south’ + Latin ungula ‘nail’.

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