…Eggs are laid in holes dug on the shoreline, with about 10 to 20 eggs laid. The South American frog-headed turtle, Hydromedusa tectifera (illustration), and the Australian long-necked turtle, Chelodina longicollis , have extremely long heads and necks, but the South American frog-headed turtle, Phrynops , has a much shorter neck, large head, and wide mouth. In contrast, turtles of the same family, the side-necked turtle family (such as the marsh side-necked turtle, Pelomedusa subrufa (illustration)), pull their necks in slightly vertically before bending them sideways. … *Some of the terminology explanations that mention "Phrynops" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…産卵は岸辺に穴を掘って行い,10~20個ほどを産む。ナンベイヘビクビガメHydromedusa tectifera(イラスト)やオーストラリアナガクビガメChelodina longicollisなどは頭頸部がきわめて長いが,南アメリカ産のカエルアタマガメ属Phrynopsのものは頸部がずっと短く,大きな頭と幅の広い口をもつ。 これに対し,同じ曲頸類に属するヨコクビガメ科のカメ(ヌマヨコクビガメPelomedusa subrufa(イラスト)など)は,頸部を垂直方向に少し引き入れてから横に曲げる。… ※「Phrynops」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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