Ostracoda (Arthropoda, Crustacea) from the Riachuelo Formation, Sergipe-Alagoas Basin, Brazil, Upper Aptian-Albian Author Antonietto, Lucas Silveira 4E63F407-03D6-4D06-9318-72FA2A23E014 Laboratory of Micropaleontology, Institute of Geosciences, University of Brasilia, Darcy Ribeiro Campus, CEP 70919 - 970 Brasilia, Distrito Federal, Brazil. & urn: lsid: zoobank. org: author: 4 E 63 F 407 - 03 D 6 - 4 D 06 - 9318 - 72 FA 2 A 23 E 014 & Corresponding author: antoniettols @ gmail. com antoniettols@gmail.com Author Carmo, Dermeval Aparecido do 911A76DB-38C3-482F-A7AC-2D57F0AFF90D Laboratory of Micropaleontology, Institute of Geosciences, University of Brasilia, Darcy Ribeiro Campus, CEP 70919 - 970 Brasilia, Distrito Federal, Brazil. & Email: derme @ unb. br & urn: lsid: zoobank. org: author: 911 A 76 DB- 38 C 3 - 482 F-A 7 AC- 2 D 57 F 0 AFF 90 D derme@unb.br Author Viviers, Marta Claudia B0CACF44-1ED6-49E0-928B-EA7FF769854F Petrobras-CENPES-PDGEO / BPA, Horácio Macedo Avenue, 950, CEP 21940 - 900, Rio de Janeiro, Rio de Janeiro, Brazil. & Email: mcviviers @ oi. com. br & urn: lsid: zoobank. org: author: B 0 CACF 44 - 1 ED 6 - 49 E 0 - 928 B-EA 7 FF 769854 F mcviviers@oi.com.br Author Neto, João Villar Queiroz 5BB35DBF-70E2-450A-A521-6ECE846052F9 Petrobras-CENPES-PDGEO / BPA, Horácio Macedo Avenue, 950, CEP 21940 - 900, Rio de Janeiro, Rio de Janeiro, Brazil. & Email: joaovq @ petrobras. com. br & urn: lsid: zoobank. org: author: 5 BB 35 DBF- 70 E 2 - 450 A-A 521 - 6 ECE 846052 F 9 joaovq@petrobras.com.br Author Hunt, Gene C94AA495-663C-4C5E-9D86-BEF1A32528BD Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, 10 th Street & Constitution Avenue NW, 20560 - 0121 Washington D. C., U. S. A. & Email: hunte @ si. edu & urn: lsid: zoobank. org: author: C 94 AA 495 - 663 C- 4 C 5 E- 9 D 86 - BEF 1 A 32528 BD hunte@si.edu text European Journal of Taxonomy 2016 2016-11-17 244 1 57 journal article 21860 10.5852/ejt.2016.244 3b46d4f3-8a5a-4d63-b338-48c6da9e8f3c 2118-9773 3850626 D26E7E13-35AB-422A-B929-01AEBA7AB0A4 Harbinia sinuata ? ( Krömmelbein & Weber, 1971 ) emend . Do Carmo et al. 2013 Fig. 6F ? Hourcqia angulata sinuata Krömmelbein & Weber, 1971: 35 , fig. 6.24a–c. Harbinia sinuata –? Ramos et al. 2006: 344 , fig. 4i–l. —? Do Carmo et al. 2008: 796 , fig. 6.10. —? Do Carmo et al. 2013: 95 , figs 4.1–4.24. Pattersoncypris sinuata –? Poropat & Colin 2012: 714 , fig. 4.2. “ Cytheridea ”? sp. gr. 201/218 –? Moura & Praça 1985: 407 , figs 2.19, 2.22. “ Cypridea ” spp. ex. gr. 201/218 –? Moura 1988: 1212 , figs 2.7, 2.10. Hourcqia angulata ssp. –? Silva-Telles Júnior & Viana 1990: 320 , fig. 3.4. Hourcqia gr. angulata – Colin & Dépêche 1997: 434 , fig. 2.19. New material examined BRAZIL : 1-CPB-1 well, Carmópolis Municipality, Sergipe State (depth of 354.5 m ); 7-CP-252 well, Santo Amaro das Brotas Municipality, Sergipe State (depths of 478.45, 478.85, 481.6, 482.9 and 484.4 m ). Measurements Homeotype (LBP 9): carapace: length = 0.93 mm , height = 0.76 mm . Remarks The suprageneric taxonomy follows Hou et al. (2002) and the generic one follows Do Carmo et al. (2013) . However, although the specimens observed are very similar to Harbinia sinuata ( Krömmelbein & Weber, 1971 ) , they differ in the shape of the dorsal anterior margin adjacent to the “hump” region, characteristic of the genus Harbinia Tsao, 1959. In the specimens of Krömmelbein & Weber (1971) and Do Carmo et al. (2013) , this area of the dorsal margin is flatter, which overall widens the anterior end. The present specimens seem to be similarly, although more discretely, ornamented as other Harbinia species ( Krömmelbein & Weber 1971 ; Hou 1984 ; Antonietto et al. 2012 ; Do Carmo et al. 2013 ). For these reasons, the current specimens are identified dubiously as Harbinia sinuata . Paleoecology and distribution Harbinia sinuata ? is a freshwater to transitional species occurring in the following localities and stages: Bongor, Doba and Doseo Basins, Chad , upper Aptian ( Colin & Dépêche 1997 ); and Riachuelo Formation, Sergipe-Alagoas Basin ( Krömmelbein & Weber 1971 ), Brazil , upper Aptian, Aracajuia benderi zone (MSA-0), Harbinia sinuata ? subzone (MSA-0.1).