Suborder Suidae - Suidae

Japanese: イノシシ亜目 - いのししあもく
Suborder Suidae - Suidae

...In more evolved species, the parotid, interdigital, metatarsal, and inguinal glands are well developed, and males often have bony horns on their heads, and other secondary sexual characteristics are prominent. Like the Perissodactyla, they descended from the Ankylodes order, and the oldest ungulates, the Palaeodontidae of the Suidae suborder, appeared in North America in the early Eocene of the Tertiary Period of the Cenozoic Era. The Palaeodontidae of the Suidae suborder soon declined, but the Ruminantidae of the Middle Eocene era gradually flourished, displacing the Perissodactyla. In addition to domestic pigs, camels, llamas, alpacas, reindeer, cattle, water buffalo, yaks, bantengs, gayars, sheep, and goats, there are 211 known extant wild species, distributed almost throughout the world except Antarctica and Australia.

*Some of the terminology that refers to the "Suidae" suborder is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…進化した類では眼下腺,指間腺,中足腺,鼠径(そけい)腺などの臭腺が発達し,雄は頭に骨質の角をもつなど二次性徴が顕著なことが多い。 奇蹄類と同じく踝節(かせつ)目から降下したもので,新生代第三紀の始新世前期に北アメリカに現れた最古の偶蹄類,イノシシ亜目のパラエオドン類はまもなく衰えたが,始新世中期に現れた反芻亜目のものは奇蹄類を駆逐してしだいに栄えた。家畜のブタ,ラクダ,ラマ,アルパカ,トナカイ,ウシ,スイギュウ,ヤク,バンテン,ガヤル,ヒツジ,ヤギなどのほか,現生の野生種は211種知られ,南極大陸とオーストラリア区以外のほとんど世界中に分布する。…

※「イノシシ亜目」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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