The analysis of 13 top push-core samples from the São Paulo Ridge, São Paulo Plateau, and Rio Grande Rise, collected during the Iatá-Piuna/Quelle cruise is the study of the deepest ostracods collected off Brazil, ranging between 1252.6 and 3606 m water depth. The 65 recorded species correspond predominantly to cytherurids, krithids, pontocypridids, and bythocytherids. Cytheropteron (nine spp.), Krithe (seven spp.), and Pseudocythere (five spp.) are the most diversified genera. Thirty-two of the species found have been formally described in previous studies, and many of the remaining ones are possibly new. Differences in the taxonomic composition with previous studies of ostracods from the Brazilian margin are attributed to the North Atlantic Deep Water (NADW) influence. Despite evidence of gas and oil seepages in the study area, no ostracod taxa putatively ascribed to chemosynthetic communities (e.g., Xylocythere) have been observed in the samples. Zoogeographic relations with Australasia and the long chronostratigraphic distribution of some taxa are briefly discussed.

对 Iatá-Piuna/Quelle 航行期间从圣保罗山脊、圣保罗高原和里奥格兰德隆起收集的 13 个顶部推芯样本进行的分析是对巴西海域最深处采集的介形类动物的研究，范围在 1252.6 至 3606 米之间水深。记录的 65 个物种主要对应于 Cytherurids、krithids、pontocypridids 和 bythocytherids。Cytheropteron（九种）、Krithe（七种）和Pseudocythere（五个属）是最多样化的属。所发现的 32 个物种已在之前的研究中得到正式描述，其余许多物种可能是新物种。分类组成与之前对巴西边缘介形类研究的差异归因于北大西洋深水（NADW）的影响。尽管研究区域有天然气和石油渗漏的证据，但在样品中没有观察到假定属于化学合成群落（例如Xylocythere ）的介形类群。简要讨论了与澳大利亚的动物地理关系以及一些类群的长期地层分布。