ABSTRACT

The Pliocene record of iguanian pleurodont lizards of South America is scarce, although it is plentiful during the Miocene, including extant genera. Here we describe a partial dentary from the Pliocene Saldungaray Formation of the southwestern Buenos Aires province, Argentina. It is assigned to the extant tropidurid Stenocercus. This is the first fossil attributed to this genus and together with Uquiasaurus from northern Argentina are the only pleurodont iguanians from this age.

中文翻译：

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阿根廷上新世的一种蜥蜴属（鬣蜥：Pleurodonta）

摘要

南美洲鬣蜥 pleurodont 蜥蜴的上新世记录很少，尽管在中新世期间它很丰富，包括现存的属。在这里，我们描述了来自阿根廷布宜诺斯艾利斯省西南部的上新世 Saldungaray 地层的部分齿牙。它被分配给现存的 tropidurid Stenocercus。这是属于该属的第一个化石，与来自阿根廷北部的Uquiasaurus一起是这个时代唯一的 pleurodont iguanians。