| 翻訳と辞書 |
| Anomocephalus ： ウィキペディア英語版 |
Anomocephalus
''Anomocephalus'' is an extinct genus of primitive anomodont. ''Anomocephalus'' is primitive in that it retains a complete set of teeth in both jaws, in contrast to its descendants, the dicynodonts, in which the dentition is reduced to only a single pair of tusks (and in many cases no teeth at all), with their jaws covered by a horny beak similar to that of a modern tortoise although they are in no way closely related. Its discovery in 1999 from the earliest terrestrial rocks of Gondwana (from Williston in the Karoo of the Northern Cape Province of South Africa) has shown that this group of herbivores originated in Gondwana rather than Laurasia, as had previously been supposed. It lived 260 million years ago during the Permian Period, in arid areas with rivers and lakes - almost like parts of modern-day Namibia or Botswana. It is closely related to ''Tiarajudens'' from Brazil.
==References==
* McCarthy, T. & Rubidge, B. 2005. ''The story of Earth & Life. A southern African perspective on a 4.6 billion-year journey''. Struik Publishers, Cape Town. 333pp.
* Van Rooyen, F. 26 Maart 2011. Brasiliaanse oerdier had dalk SA familie. ''Volksblad'': 5. ()
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Anomocephalus」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|