Use of subfossil cladoceran remains for paleolimnological studies in Mesoamerica, especially in Central America, is constrained by the poorly known composition of cladoceran communities. We examined sediments from 56 waterbodies in Central America (Guatemala, El Salvador, Honduras) and the Yucatan Peninsula (Mexico), and provide illustrations and descriptions of the remains of Chydoridae from the region, emphasizing their diagnostic traits. In total, 36 Chydoridae taxa, representing 24 genera, were recognized. The illustrations and descriptions of chydorid subfossils included here will enable paleolimnologists to recognize and identify such remains in lake sediment cores, thereby facilitating paleoenvironmental inferences from lake sites in Mesoamerica. Furthermore, data included here expand knowledge about the geographic distributions of Neotropical chydorids.

中文翻译：

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从中美洲和墨西哥尤卡坦半岛的湖泊沉积物中鉴定亚化石 chydorid Cladocera（甲壳纲：Branchipoda）的指南：第二部分

在中美洲，特别是在中美洲，使用亚化石枝角类动物遗骸进行古湖泊学研究受到了鲜为人知的枝角类动物群落组成的限制。我们检查了来自中美洲（危地马拉、萨尔瓦多、洪都拉斯）和尤卡坦半岛（墨西哥）的 56 个水体的沉积物，并提供了该地区 Chydoridae 遗骸的插图和描述，强调了它们的诊断特征。总共确认了 36 个 Chydoridae 分类群，代表 24 属。此处包含的乳糜泻亚化石的插图和描述将使古湖泊学家能够识别和识别湖泊沉积物核心中的此类遗迹，从而促进对中美洲湖泊遗址的古环境推断。此外，