Ungulates - ungulates

A common name for hoofed mammals, including odd-toed and even-toed ungulates. A large herbivore adapted to running on the ground, with long metacarpals and metatarsals, missing the first toe, and a long row of molars. In the past, in addition to odd-toed and even-toed ungulates, proboscideans, hyraxes, extinct condylars, and anunculidae, all belonging to the proboscidea, were also included in the ungulate order, but this classification is no longer used today, as it would be necessary to include tubulodonts, sirenians, extinct fascicularis, holodonta, and kumai.

[Yoshinori Imaizumi]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

ひづめをもった哺乳(ほにゅう)類の俗称で、奇蹄類と偶蹄類を含む。地上を走るのに適応した大形草食獣で、中手・中足骨が長く、第1指を欠き、臼歯(きゅうし)列が長い。古くは奇蹄類、偶蹄類のほか、原蹄上目に属する長鼻類、ハイラックス類、絶滅した顆節(かせつ)類、南蹄類などをも含めて有蹄目としたが、系統的には管歯類、海牛類、絶滅した束歯類、全歯類、クマイヌ類などをもこれに含める必要があるため、この分類は現在では用いられていない。

［今泉吉典］

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