A taxonomic revision of the Rhinocerotidae from the latest Oligocene locality of Thézels in SW France is provided, based on comparative description of several hundreds of mandibular, dental, and postcranial specimens. In terms of abundance, the small-sized and slender-limbed rhinocerotine Mesaceratherium gaimersheimense Heissig, 1969 widely outnumbers the medium-sized and shorter-limbed teleoceratine Diaceratherium aff. lemanense. The material from Thézels in particular adds to the knowledge of M. gaimersheimense in providing for the first time valuable information on most elements of its appendicular skeleton, virtually unknown thus far. This work further confirms that M. gaimersheimense is restricted to the latest Oligocene interval, whereas M. paulhiacense (Richard, 1937) also first occurring in latest Oligocene deposits, survives during the earliest Miocene (Aquitanian standard age; Agenian European Land Mammal Age). The Agen area in SW France (type area of the Agenian ELMA) provides a well-documented sequence for latest Oligocene-earliest Miocene rhinocerotids of Western Europe with Thézels (MP30), Paulhiac (MN1), and Laugnac (MN2). Mesaceratherium gaimersheimense shows several postcranial differences with M. paulhiacense (shape of articular facets on central metapodials; slenderer astragalus but less slender metapodials) suggesting a still more cursorial locomotory mode for the latter species.

根据对数百个下颌，牙齿和颅后标本的比较描述，对法国西南部Thézels的最新渐新世地区的犀牛科进行了分类学修订。就丰度而言，1969年的小而细长的犀牛角顶肉Mesaceratherium gaimersheimense Heissig的数量远远超过了中型和较短的远胸角膜硬膜外Diceratherium aff的数量。Lemanense。从Thézels特别的材料增加的知识M.  gaimersheimense提供关于其四肢骨骼的大部分元素，几乎无人知晓迄今为止第一次有价值的信息。这项工作进一步证实了M.  gaimersheimense仅限于最新的渐新世间隔，而M.  paulhiacense（理查德，1937年）也首先出现在最新的渐新世矿床中，并在最早的中新世（阿基坦标准年龄；阿让尼亚欧洲陆地哺乳动物时代）生存。法国西南部的Agen地区（Agenian ELMA的类型地区）为西欧最新的渐新世最早的中新世鼻犀提供了有据可查的序列，其中Thézels（MP30），Paulhiac（MN1）和Laugnac（MN2）。Mesaceratherium  gaimersheimense与节目几个颅后差异M.  paulhiacense（上中央跖骨关节面的形状;苗条黄芪但小于细长跖骨），这表明后者的物种还更适于行走的运动器官的模式。