Ostracoda and foraminifera from Paleocene (Olinda well), Paraíba Basin, Brazilian Northeast

• Published in: Anais da Academia Brasileira de Ciências
• Main Authors: ENELISE K. PIOVESAN, ROBBYSON M. MELO, FERNANDO M. LOPES, GERSON FAUTH, DENIZE S. COSTA
• Format: Article in Journal/Newspaper
• Language: English
• Published: Academia Brasileira de Ciências
• Subjects: Brazil; ostracods; Paleocene; Paraíba Basin; foraminifera; Science; Q; Leckie; Planktonic foraminifera
• Online Access: https://doi.org/10.1590/0001-3765201720160768; https://doaj.org/article/ca148d35218c47fd917e4276bd849521

ABSTRACT Paleocene ostracods and planktonic foraminifera from the Maria Farinha Formation, Paraíba Basin, are herein presented. Eleven ostracod species were identified in the genera Cytherella Jones, Cytherelloidea Alexander, Eocytheropteron Alexander, Semicytherura Wagner, Paracosta Siddiqui, Buntonia Howe, Soudanella Apostolescu, Leguminocythereis Howe and, probably, Pataviella Liebau. The planktonic foraminifera are represented by the genera Guembelitria Cushman, Parvularugoglobigerina Hofker, Woodringina Loeblich and Tappan, Heterohelix Ehrenberg, Zeauvigerina Finlay, Muricohedbergella Huber and Leckie, and Praemurica Olsson, Hemleben, Berggren and Liu. The ostracods and foraminifera analyzed indicate an inner shelf paleoenvironment for the studied section. Blooms of Guembelitria spp., which indicate either shallow environments or upwelling zones, were also recorded reinforcing previous paleoenvironmental interpretations based on other fossil groups for this basin.