The holotype of the titanosaur sauropod Rinconsaurus caudamirus, from the Bajo de la Carpa Formation (Santonian, Upper Cretaceous, Neuquén Group), is based on an articulated series of 13 anterior-middle to middle posterior caudal vertebrae and two illia, in addition to cranial, axial and appendicular elements corresponding to several individuals. One of the skull elements originally identified as a prefrontal (MAU-Pv-CRS-102), is reinterpreted here as a mesoeucrocodylian right ilium, likely belonging to Pehuenchesuchus enderi, a crocodyliform found in the same quarry. Therefore, this element is excluded from the Rinconsaurus type materials, adding a new element to Pehuenchesuchus and increasing the knowledge of its anatomy.

来自 Bajo de la Carpa 组（桑顿阶、上白垩纪、内乌肯群）的泰坦龙蜥脚类恐龙Rinconsaurus caudamirus 的正模基于 13 个前-中到中后尾椎骨和两个髂骨的铰接系列，以及颅骨，轴向和附属元素对应于几个个体。最初被确定为前额叶 (MAU-Pv-CRS-102) 的头骨元素之一，在这里被重新解释为右髂胫骨，可能属于Pehuenchesuchus enderi，一种在同一采石场发现的鳄鱼。因此，该元素被排除在Rinconsaurus类型材料之外，为Pehuenchesuchus添加了一个新元素并增加了对其解剖学的了解。