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Taxonomy of limnic Ostracoda (Crustacea) from the Alagamar Formation, middle–upper Aptian, Potiguar Basin, northeastern Brazil

Published online by Cambridge University Press:  20 May 2016

Dermeval Aparecido Do Carmo ,
João Carlos Coimbra ,
Robin Charles Whatley ,
Lucas Silveira Antonietto  and
Raphael Teixeira De Paiva Citon
Dermeval Aparecido Do Carmo
Affiliation:
Instituto de Geociências, Universidade de Brasília, Brasília, Distrito Federal, 70910.900, Brazil, , & ,
João Carlos Coimbra
Affiliation:
2Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, PO Box 15001, Porto Alegre, Rio Grande do Sul, 91501.970, Brazil,
Robin Charles Whatley
Affiliation:
Institute of Earth Sciences, University of Wales, Aberystwyth, Wales, SY23DF, UK,
Lucas Silveira Antonietto
Affiliation:
Instituto de Geociências, Universidade de Brasília, Brasília, Distrito Federal, 70910.900, Brazil, , & ,
Raphael Teixeira De Paiva Citon
Affiliation:
Instituto de Geociências, Universidade de Brasília, Brasília, Distrito Federal, 70910.900, Brazil, , & ,
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Abstract

Fifteen limnic ostracodes species have been recorded in the Alagamar Formation, Potiguar Basin: Cypridea araripensis Silva, 1978a; Cypridea? sp., Harbinia sinuata (Krömmelbein and Weber, 1971); Harbinia crepata n. sp., Harbinia dimorphica n. sp., Harbinia alta Antonietto et al., 2012; Paracypria? elongata n. sp., Ilyocyprimorpha berthoui (Colin and Dépêche, 1997); Ilyocypris? sp., Brasacypris subovatum n. sp., Candona? sp., Theriosynoecum colini n. sp., T. guzzoi n. sp., T. silvai (Silva, 1978b) diagnosis emended by Do Carmo et al. (2004b); and Darwinula martinsi Silva, 1978c diagnosis emended by Do Carmo et al. (2004b). Nine of these species have also been recorded outside of the Potiguar Basin, either in other Cretaceous basins in Brazil or coeval strata in western Africa. Despite the controversy about dating the local Alagoas Stage and the relatively large range of the Zone Harbinia spp. 201–218, the material studied in this paper belongs to the interval corresponding to the well-defined palynological zone coded as P-270, which is mid-upper Aptian in age.

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Research Article
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Journal of Paleontology , Volume 87 , Issue 1 , January 2013 , pp. 91 - 104
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Copyright © The Paleontological Society 

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