A new and unusual late Cretaceous mammal from Patagonia
A new and unusual late Cretaceous mammal from Patagonia
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来自巴塔哥尼亚的一种新的、不寻常的白垩纪晚期哺乳动物
DOI：
10.1080/02724634.1986.10011621
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发表时间：
1986
影响因子：
1.4
通讯作者：
J. Bonaparte
中科院分区：
文献类型：
--
作者：
J. Bonaparte
Gondwanatheriumpatagonicum是产于巴塔哥尼亚晚白垩世洛斯阿拉米托斯组的一个哺乳动物新属新种。它的代表是几个孤立的，高冠，高齿臼齿，与鸭嘴龙，泰坦龙，兽脚亚目和各种小型脊椎动物的组合有关。鸭嘴龙科的克里特龙、泰坦龙和区域地质资料都表明它们的时代属于坎帕尼亚期。Gondwanatherium的关系是不确定的。最接近的表型相似性是一个中古新世xenarthran，Sudamerica，从巴塔哥尼亚，虽然差异表明，他们属于不同的家庭。冈瓦纳兽在巴塔哥尼亚的存在是前马斯特里赫特白垩纪冈瓦纳和劳亚哺乳动物区系特有的证据。
ABSTRACT Gondwanatherium patagonicum is a new mammalian genus and species from the Upper Cretaceous Los Alamitos Formation of Patagonia. It is represented by several isolated, high-crowned, hypselodont molars that were found in association with hadrosaurs, titanosaurs, theropods, and a varied assemblage of small vertebrates. The presence of the hadrosaur Kritosaurus, titanosaurs, and data of regional geology indicate a Campanian age. The relationships of Gondwanatherium are uncertain. The closest phenetic resemblances are to a middle Paleocene xenarthran, Sudamerica, from Patagonia, although differences suggest that they belong to different families. The presence of Gondwanatherium in Patagonia is evidence for endemism of Gondwanan and Laurasian mammalian faunas during the pre-Maastrichtian Cretaceous.