New Non-Marine Ostracod Genera And Species Of Aptian Age From Araripe Basin, Northeast Brazil Author Almeida-Lima, Débora Soares De Laboratório de Micropaleontologia Aplicada (LMA / LAGESE), Instituto de Pesquisa em Petróleo e Energia (LITPEG), Universidade Federal de Pernambuco, Av. da Arquitetura, s / n, 50740 - 540, Recife, PE, Brazil & Programa de Pós-Graduação em Geociências, Departamento de Geologia, Centro de Tecnologia e Geociências, Universidade Federal de Pernambuco, Av. da Arquitetura, s / n, 50740 - 540, Recife, PE, Brazil Author Guzmán, Juliana Laboratório de Micropaleontologia Aplicada (LMA / LAGESE), Instituto de Pesquisa em Petróleo e Energia (LITPEG), Universidade Federal de Pernambuco, Av. da Arquitetura, s / n, 50740 - 540, Recife, PE, Brazil Author Maia, Renata Juliana Arruda Laboratório de Micropaleontologia Aplicada (LMA / LAGESE), Instituto de Pesquisa em Petróleo e Energia (LITPEG), Universidade Federal de Pernambuco, Av. da Arquitetura, s / n, 50740 - 540, Recife, PE, Brazil & Programa de Pós-Graduação em Geociências, Departamento de Geologia, Centro de Tecnologia e Geociências, Universidade Federal de Pernambuco, Av. da Arquitetura, s / n, 50740 - 540, Recife, PE, Brazil Author Jesus, Ariany De PETROBRAS / CENPES / PDIEP / GEG / CE, Av. Horácio Macedo, 950 Ilha do Fundão, 21941 - 915, Rio de Janeiro, RJ, Brazil Author Piovesan, Enelise Katia Laboratório de Micropaleontologia Aplicada (LMA / LAGESE), Instituto de Pesquisa em Petróleo e Energia (LITPEG), Universidade Federal de Pernambuco, Av. da Arquitetura, s / n, 50740 - 540, Recife, PE, Brazil & Programa de Pós-Graduação em Geociências, Departamento de Geologia, Centro de Tecnologia e Geociências, Universidade Federal de Pernambuco, Av. da Arquitetura, s / n, 50740 - 540, Recife, PE, Brazil text Zootaxa 2024 2024-08-20 5496 3 401 416 http://dx.doi.org/10.11646/zootaxa.5496.3.6 journal article 10.11646/zootaxa.5496.3.6 1175-5326 13346885 E4290B13-40CF-4BED-97C5-E4FA7AC246C5 Macunhaella gen. nov. ( Fig. 4G–J ) Zoobank-link: urn:lsid:zoobank.org:act: B6F27B50-999E-4CC1-A398-CA445EB326FE Derivation of name: In memory of Maria da Conceição Cunha for her contribution to the knowledge of non-marine ostracods of Brazil . Type-species: Macunhaella posteroaltis sp. nov. Stratigraphic and geographic distribution: Aptian, Crato Formation, Santana Group, Araripe Basin, Crato Municipality, Ceará State , Brazil ( Guzmán et al . 2022 , 2023; this study). Diagnosis: A new genus of Cyprididae with a sub-rectangular carapace, greater height in the posterior region and obtuse cardinal angles. Description: Carapace sub-rectangular in lateral view; fusiform in dorsal view. Ventral margin straight; dorsal margin straight and slightly sloping towards the anterior region. Posterior region higher than anterior. Anterior and posterior cardinal angles obtuse. Remarks: The new genus Macunhaella has a higher posterior region, which makes it different from other representatives of the Cyprididae family, and this is its most evident distinctive feature. This is a typical characteristic of representatives of the Darwinuloidea superfamily, however, the individuals of Macunhaella gen. nov. have carapaces with a fusiform outline in dorsal view, greater median width and are narrower than any genera within Darwinuloidea, in addition to presenting a different pattern of adductor muscle scar than that described for this superfamily ( Fig. 4J ). The genus Paracypridea Swain, 1946 , also has the same features as the new genus Macunhaella but differs significantly from it by displaying a rostrum in the anteroventral region of the carapace.