Abstract In this work we present the description and analysis of a palaeoichnological site (7.9TAG) that only contains crocodile tracks. The site contains well preserved and abundant crocodilian manus and pes prints; there are no belly and/or tail traces. The crocodyle tracks have been mapped and the biomorphic and morphometric characters of the tracks and trackways have been studied. Between the digit traces of the pes prints (not in manus prints) there is a graded depression that indicates the presence of a foot webbing. The number of crocodilian footprints (93) and trackways (8) of the site is sufficient to define, and to support with confidence the data shown in the article. As consequence a crocodiliform ichnogenus, Batrachopus has been defined, characterized by the presence of a trace of a probably interdigital membrane in the pes prints, the trace of a bulge on toe V, the lack of tail traces, and the very narrow gauge trackway. A comparative study is done with all the fossil crocodile footprints described so far. The 7.9TAG footprints printed on sediments of Middle?-Upper Jurassic age (Isli Formation) are the first Batrachopus ichnites described both from this age and in the African continent.

中文翻译：

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Batrachopus isp 的足迹。来自 Imilchil 大型轨道站点。中间？- 上侏罗纪，中央高阿特拉斯（摩洛哥）

摘要 在这项工作中，我们介绍了一个仅包含鳄鱼足迹的古生物遗址 (7.9TAG) 的描述和分析。该遗址包含保存完好且丰富的鳄鱼手印和 pes 印刷品；没有腹部和/或尾部痕迹。已经绘制了鳄鱼的足迹，并研究了足迹和轨道的生物形态和形态特征。在脚印的数字痕迹（不是在手印中）之间有一个分级的凹陷，表明存在脚蹼。该站点的鳄鱼足迹 (93) 和轨道 (8) 的数量足以定义并自信地支持文章中显示的数据。因此，一种鳄鱼形 ichnogenus，Batrachopus 已被定义，其特征是在 pes 指纹中可能存在一丝叉指膜，脚趾 V 上凸起的痕迹，缺乏尾部痕迹，以及非常窄的轨距轨道。对迄今为止描述的所有化石鳄鱼脚印进行了比较研究。印在中？上侏罗纪（Isli 组）沉积物中的 7.9TAG 脚印是该时代和非洲大陆描述的第一个 Batrachopus ichnites。