1ST DISCOVERY OF MONOTREMES IN SOUTH-AMERICA
1ST DISCOVERY OF MONOTREMES IN SOUTH-AMERICA
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DOI：
10.1038/356704a0
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发表时间：
1992-04-23
期刊：
影响因子：
64.8
通讯作者：
HAND, SJ
中科院分区：
文献类型：
--
作者：
PASCUAL, R;ARCHER, M;HAND, SJ
到目前为止，产卵的单孔虫只在澳大利亚大陆被发现，它们从早白垩世到现在一直生活在那里。在这里，我们报道了来自澳大利亚大陆以外的第一种单孔虫，一种鸟棘类，来自阿根廷南部巴塔哥尼亚早古新世晚期的沉积物。这一发现证明了单孔动物的冈德瓦南性质，并支持了南美洲南部巴塔哥尼亚地体具有与大陆其他地区不同的生物史的假设。
UNTIL now, the egg-laying monotremes were only known from the Australian continent, where they have lived since the early Cretaceous period to the present 1. Here we report the first monotreme from outside the Australian continent, an ornithorhynchid, from sediments of late early Palaeocene age in Patagonia, southern Argentina. This discovery demonstrates the Gondwanan nature of monotremes and supports the hypothesis that the Patagonian Terrane of southern South America had a biotic history distinct from that of the rest of the continent.