The late Miocene Urumaco Formation of Venezuela has one of the richest and ecologically diverse crocodylian fossil faunas of the Cenozoic of South America. This diversity includes several different genera and species of crocodylians that held many distinct ecological niches, such as those of generalist predators, durophagous predators, giant predators and longirrostrine piscivorous, among others. This paper offers a significant addition to this already remarkable fauna by describing the first occurrence of Acresuchus pachytemporalis Souza-Filho et al.,2018 for the Urumaco Formation. This record consists of the specimen MCNUSB-PB-02FU-RS43, which is a posterior portion of the skull, consisted mostly by the skull table and the braincase, with incomplete mandibular rami associated. The specimen also represents the first occurrence of A. pachytemporalis outside the late Miocene Solimões Formation of Brazil, from which it has been originally described. As such, the occurrence of A. pachytemporalis in the Urumaco Formation recorded by this contribution is another evidence of the large taxonomical and paleoecological similarity between the crocodylian faunas of this unit and the Solimões Formation, which share many similar taxa at generic and specific levels and exhibit similar ecological niches being hold by fossil crocodylians.

委内瑞拉的中新世Urumaco组晚期是南美新生代最丰富和生态多样的鳄鱼化石动物群之一。这种多样性包括几个不同的鳄鱼属和物种，它们具有许多独特的生态位，例如通俗性的食肉动物，嗜食性的食肉动物，巨型的食肉动物和长食肉性食肉鱼类。本文通过描述Acresuchus pachytemporalis的首次出现，为这一本已非常出色的动物群提供了重要的补充。Souza-Filho等人，2018年的Urumaco组。该记录由标本MCNUSB-PB-02FU-RS43组成，标本MCNUSB-PB-02FU-RS43是颅骨的后部，主要由颅骨桌和脑箱组成，并伴有下颌骨不完全相关。该标本还代表了巴西中新世晚苏美世岩层以外首次出现的A. pachytemporalis，最初对其进行了描述。因此，发生了A. pachytemporalis 该贡献记录的Urumaco组中的另一证据表明，该单元的鳄鱼类动物区系与Solimões组之间在分类学和古生态学上有很大的相似性，它们在通用和特定水平上共有许多相似的分类单元，并且显示出化石鳄鱼似的类似生态位。