Universidade Federal de Pernambuco, Departamento de Geologia, Av. da Arquitetura, s/n, 50740-550, Recife, PE, Brazil..
Universidade Federal de Pernambuco, Departamento de Geologia, Programa de Ps-Graduao em Geocincias, Av. da Arquitetura, s/n, 50740-550, Recife, PE, Brazil. .
Zootaxa. 2022 Jul 1;5159(4):535-557. doi: 10.11646/zootaxa.5159.4.4.
A systematic study is made of Early Cretaceous (late Aptian/earlyAlbian) ostracod assemblages from the Santo Antnio section. This section is characterized by sediment belonging to the post-rift sedimentary sequence of the Romualdo Formation in the southern-central region of the Araripe Basin, Brazil and represents on of the first marine ingression in the interior of the continent, during the beginning of the formation of the Atlantic Ocean. The Santo Antonio section presents ostracods in greater diversity than previously known. Nineteen samples were analyzed, yielding a total of 8,370 specimens. Fifteen taxa were identified, including six brackish ostracods: Pattersoncypris salitrensis, Pattersoncypris angulata, Pattersoncypris micropapillosa, Damonella grandiensis, Alicenula cf. leguminella and Theriosynoecum cf. quadrinodosum; and nine typically brackish-marine species, including seven new ones: Dicrorygma cf. minuta, Dicrorygma (Orthorygma?) dimorpha, Mongolianella aptianensis sp. nov., Mantelliana speculum sp. nov., Paracypris undulareventralis sp. nov., Microceratina retangularis sp. nov., Perissocytheridea oculusutilis sp. nov., Perissocytheridea poruslinearis sp. nov. and Perissocytheridea florisdorsalis sp. nov. Therefore, the detailed taxonomic study brings a new understanding of marine ostracods around the upper Aptian/lower Albian boundary of the Araripe Basin.
对圣安东尼奥剖面早白垩世（晚阿普第期/早阿尔比期）介形类组合进行了系统研究。该剖面的特征是属于巴西阿雷格里盆地中南部罗曼杜尔组裂谷后沉积序列的沉积，代表了大西洋形成初期内陆首次发生的海侵之一。圣安东尼奥剖面的介形类多样性比以前已知的更为丰富。分析了 19 个样本，共获得 8370 个标本。确定了 15 个分类群，包括 6 种半咸水介形类：Pattersoncypris salitrensis、Pattersoncypris angulata、Pattersoncypris micropapillosa、Damonella grandiensis、Alicenula cf. leguminella 和 Theriosynoecum cf. quadrinodosum；以及 9 种典型的半咸水-海洋种，其中 7 种为新种：Dicrorygma cf. minuta、Dicrorygma (Orthorygma?) dimorpha、Mongolianella aptianensis sp. nov.、Mantelliana speculum sp. nov.、Paracypris undulareventralis sp. nov.、Microceratina retangularis sp. nov.、Perissocytheridea oculusutilis sp. nov.、Perissocytheridea poruslinearis sp. nov. 和 Perissocytheridea florisdorsalis sp. nov. 因此，详细的分类学研究对阿雷格里盆地上部阿普第期/下部阿尔比期介形类的海洋生物有了新的认识。
