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首页> 外文期刊>Journal of Paleontology >A novel late Early Miocene assemblage of terrestrial gastropods from Santa Cruz (Patagonia, Argentina)
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A novel late Early Miocene assemblage of terrestrial gastropods from Santa Cruz (Patagonia, Argentina)

机译：来自圣克鲁斯（阿根廷巴塔哥尼亚）的新型陆生腹足纲动物的中新世晚期晚期组合。

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A remarkable fossil assemblage composed of five gastropod taxa is described from the Early Miocene of Santa Cruz (Patagonia, Argentina) in southernmost South America. The assemblage includes extinct and living genera South America, and on geographic distributions and represent background new information on spatial and across time distributions as well as identification of new taxa. A new taxon, Patagocharopa enigmatica n. gen. n. sp., is tentatively assigned to Charopidae. Gastrocopta patagonica n. sp. (Vertiginidae) represents the oldest record of Gastrocopta in Argentina and the southernmost record for the Americas. Punctum patagonicum n. sp. (Punctidae) represents the first record of Punctum for continental South America, and characterized by a protoconch with traces of axial costulae and a teleoconch with strong radial ribs. Zilchogyra miocenica n. sp. is the first Miocene record of the charopid genus Zilchogyra. Fragments of a possible Scolodonta (Scolodontidae) are recorded. Overall, the assemblage represents an important and useful paleoenvironmental tool. This fauna suggests that a more temperate and humid environment than today-with a more dense vegetation cover-was prevalent at this site during the Early Miocene.
机译：在南美洲最南端的圣克鲁斯早期中新世（阿根廷巴塔哥尼亚）中，描述了由五个腹足动物类群组成的非凡的化石组合。该集合包括已灭绝和生活在南美洲的物种，以及地理分布，并且代表有关空间和跨时间分布以及新分类单元的背景新信息。一个新的分类单元Patagocharopa enigmatica n。 gen。 。 sp。，暂时分配给了Charopidae。 Gastrocopta patagonica。 sp。 （Vertiginidae）代表了阿根廷Gastrocopta的最古老记录，也是美洲最南端的记录。巴塔哥绒糖sp。 （Punctidae）代表了南美大陆的Punctum的第一个记录，其特征是原生螺孔有轴向肋的痕迹，远距螺孔有很强的径向肋骨。百日草Zilchogyra miocenica sp。是腕足类Zilchogyra的第一个中新世记录。记录可能的球形齿科（Scolodontidae）的片段。总体而言，该组合代表了一种重要且有用的古环境工具。该动物区系表明，在中新世早期，该地区普遍存在比今天更温和潮湿的环境，植被覆盖更茂密。

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