Crocodylidae

Japanese: Crocodylidae
Crocodylidae

…General term for crocodiles belonging to the family Crocodylidae, a reptile class that includes large, aggressive species. They are found in the freshwater lakes and rivers of central and southern Africa, India, tropical Asia, New Guinea, northern Australia, and tropical America, and some species can also live in saltwater and are found in the Melanesian islands.

From [Crocodile]


[Systematics, Classification]
The ancestral form of crocodiles evolved from alveolodonts in the late Triassic period, and many large species, including marine ones, flourished in the Mesozoic era. There are various theories on the classification of extant species, but they are often divided into two families, Alligatoridae and Crocodylidae, based on differences in the structure of the internal nostrils, dentition, and scales. The Alligatoridae family includes the Chinese crocodile, Mississippi crocodile, spectacled caiman (illustration), and black caiman, while the Crocodylidae family includes the saltwater crocodile, Nile crocodile, gavial (illustration), marsh crocodile, and American crocodile.

*Some of the terminology that mentions "Crocodylidae" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…性質の荒い大型種を含む爬虫綱クロコダイル科Crocodylidaeに属するワニ類の総称。アフリカ中南部,インド,熱帯アジア,ニューギニア,オーストラリア北部および熱帯アメリカの湖沼や河川の淡水に分布し,一部の種は海水中でも生活できメラネシア諸島に及んでいる。…

【ワニ(鰐)】より


[系統,分類]
 ワニの祖先型は三畳紀後期の槽歯類から分化し,中生代に繁栄して海洋性を含む多くの大型種が出現した。現生種の分類には諸説があるが,内鼻孔,歯列,鱗板などの構造の相違によって,アリゲーター科Alligatoridaeとクロコダイル科Crocodylidaeの2科に分類されることが多い。アリゲーター科には,ヨウスコウワニ,ミシシッピワニ,メガネカイマン(イラスト),クロカイマンなどが,クロコダイル科にはイリエワニ,ナイルワニ,ガビアル(イラスト),ヌマワニ,アメリカワニなどが含まれる。…

※「Crocodylidae」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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