International Symposium on Ostracoda - postSyposium.thtml
FOSSIL AND RECENT OSTRACODA IN BRAZIL
CENOZOIC LIMNIC OSTRACODS
Cristianini Trescastro Bergue
Laboratório de Micropaleontologia. Universidade do Vale do Rio dos Sinos, São Leopoldo-RS. CEP 93022-000.
E-mail: cbergue@unisinos.br
João Carlos Coimbra
Departamento de Paleontologia e Estratigrafia, Universidade Federal do Rio Grande do Sul. Porto Alegre. RS. CEP: 91501-970
E-mail: joao.coimbra@ufrgs.br
The first specific approach on Brazilian non-marine ostracodes is Müller’s study on the bromelid dweller species Elpidium bromeliarum, from Brazilian rainforest. In the first decades of 20th century foreign researchers presented a preliminar survey on freshwater faunas from northeastern region (Daday, 1911, Klie, 1939a, 1939b, 1939c, 1939d, 1940a, 1940b, 1940c, 1949d, 1940e, Triebel, 1939, Tressler, 1950). Later, in the 1950 and 1960 decades studies on systematic and other biologic aspects of freshwater and mixohaline species, were developed, which constitute the first studies of Brazilian researchers (Pinto & Kotzian, 1961; Pinto & Sanguinetti, 1962; Pinto & Purper, 1965 a,b).
In the following years new contributions came from studies on south Brazilian estuarine/lagunar systems. Ornellas (1974) proposed the genus Minicythere, while Pinto & Ornellas (1970) and Ornellas & Fallavena (1978) described new species improving the ecologic and zoogeographic knowledge on mixohaline faunas. At the same time fossil non-marine ostracodes were also studied by Purper (1977, 1979) and Purper & Pinto (1983, 1985) in Tertiary sediments from Amazon basin, especially Pebas (=Solimões) Formation. Ramos (2006) presented a new contribution to the Neogene Solimões ostracods.
Recent fresh water assemblages were studied mainly in Rio Grande do Sul state by Kotzian (1974), Würdig (1983, 1988), Würdig et al. (1988, 1990), Würdig & Pinto (1993 a,b, 1994, 1999) and Albertoni & Würdig (1996). Besides the systematic approach, those authors assessed the relationship between aquatic vegetation and other ecological parameters on species distribution. Additional studies on southern non-marine species were published by Pinto & Ornellas (1970) and Pinto & Purper (1970), this one proposing a neotype for Elpidium bromeliarum Müller, 1880 as well as a revision of that genus.
Guzzo & Coimbra (1989) discussed the taxonomical and ecological significance of nodes in the Cretaceous non-marine ostracods, with emphasis in a northeastern Brazilian species. Ramos et al. (2006) studied the paleoecological significance of the non-marine ostracods from the Cretaceous Codó Formation, northern Brazil. Paz & Rossetti (2006a, b) studied the paleolimnology of the Cretaceous Codo Formation (Parnaiba Basin) based on isotopic geochimistry, sedimentology and microfossils.
Pinto et al. (2003, 2004, 2005a, b) began the development of a new field on Brazilian ostracodology with the study of terrestrial ostracodes from São Paulo state, southeast Brazil. Those articles presented the description of new taxa and brought new data on terrestrial ostracode faunas from tropical areas.
References:
Albertoni, E.F. & Würdig, N.L. 1996. Comunidades de ostracodes associada a macrófitas aquáticas na lagoa do gentil, Tramandaí, RS. Acta Limnologica Brasiliensia, 8:103-114.
Coimbra, J.C.; Badaraco, C.K.; Fauth, G.. 2006. Palaeoenvironmental significance of allochthonous vs. autochthonous late Quaternary ostracodes from Imarui Lagoon and D'Una River, southern Brazil. Revista Brasileira de Paleontologia, 9(3):295-302.
Coimbra, J.C; Carreño, A.L.; Geraque, E. & Eichler, B. 2007. Ostracodes (Crustacea) from Cananéia-Iguape estuarine/lagoon system and the zoogeography of the mixohaline assemblages along southern/southeastern Brazil. Iheringia, Série Zoologia, (in press).
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Guzzo, J.V.P. & Coimbra, J.C. 1989. Environmentally cued polymorphism in Paracypridea elegans,an Early Cretaceous non-marine ostracode. In: 11° CONGRESSO BRASILEIRO DE PALEONTOLOGIA, 2, 1989, Resumos, Curitiba, UFPR, p. 317-327.
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Ornellas, L.P. & Würdig, N.L. 1983. Cyprideis salebrosa Hartmann (Ramirez, 1967) emend Ornellas & Würdig, a new subspecies from Brazil and Argentina. Pesquisas, 15:94-112.
Paz, J.D.S.; Rossetti, D.F. 2006. Linking lacustrine cycles with syn-sedimentary tectonic episodes; an example from the Codo Formation (late Aptian), northeastern Brazil. Geological Magazine, 142(3):269-285.
Paz, J.D.S.; Rossetti, D.F. 2006. Paleohydrology of an upper Aptian lacustrine system from northeastern Brazil; integration of facies and isotopic geochemistry. Palaeogeography, Palaeoclimatology, Palaeoecology, 241(2): 247-266.
Pinto, I.D. & Kotzian, S.C.B. 1961. Novos ostracodes da família Darwinulidae e a variação das impressões musculares. Boletim do Instituto de Ciências Naturais, 11:5-54.
Pinto, I.D. & Ornellas, L.P. 1965. A new brackishwater ostracode Cyprideis riograndensis Pinto et Ornellas, sp. nov., from Southern Brazil and its ontogenetic carapace development. Publicação Especial da Escola de Geologia de Porto Alegre, 8:1-80.
Pinto, I.D.; Ornellas, L.P. 1970. A new brackiswater ostracode Perissocytheridea krömmelbeini Pinto et Ornellas, sp. nov., from Southern Brazil. Publicação Especial da Escola de Geologia de Porto Alegre, 20:1-19.
Pinto, I.D.; Ornellas, L.P.; Purper, I.; Kotzian, S.C.B.; Sanguinetti, Y.T. 1978. Recent ostracodes along 7.408km of the Brazilian Coast (33º45'S to 4º25'N). Pesquisas, 9:109-120.
Pinto, I.D. & Purper, I. 1965. A new freshwater ostracode Cyprinotus trispinosus Pinto et Purper, sp. nov., from southern Brazil, its ontogenetic carapace variation and seasonal distribution. Publicação Especial da Escola de Geologia de Porto Alegre, 7:1-53.
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Pinto, I.D.; Sanguinetti, Y.T. 1962. A Complete Revision of the genera Bisulcocypris and Theriosynoecum (Ostracoda) with the world geographical and stratigraphical distribution (including Metacypris, Elpidium, Gomphocythere and Cytheridella). Publicação Especial da Escola de Geologia de Porto Alegre, 4:1-165.
Pinto, R.L.; Rocha, C.E.F.; Martens, K. 2003. On two new species of the genus Vestaleunla Rossetti & Martens, 1998 (Crustacea, Ostracoda, Darwinulidae) from semiterrestrial habitats in São Paulo State (Brazil). Zoological Journal of the Linnean Society, 139(2):305-313.
Pinto, R.L.; Rocha, C.E.F.; Martens, K. 2004. On the genus Penthesilenula Rossetti and Martens, 1998 (Crustacea, Ostracoda, Darwinulidae) from (semi-) terrestrial habitats in São Paulo State (Brazil), with the description of a new species. Journal of Natural History, 38:2567-2589.
Pinto, R.L.; Rocha, C.E.F. & Martens, K. 2005a. On the evolution of the genus Microdarwinula Danielopol, 1968 (Ostracoda, Darwinulidae) with the description of a new speciesfrom semi-terrestrial habitats in São Paulo State (Brazil). Crustaceana, 78:975-986.
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Ramos, M.I.F.; Rossetti, D.; PAZ, J.D.S. 2006. Caracterização e significado paleoambiental da fauna de ostracodes da Formação Codó (Neoaptiano), leste da Bacia do Grajaú. Revista Brasileira de Paleontologia, 9:339-348.
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Würdig, N.L. & Pinto, I.D. 1990. Diaphanocypris, a new Ostracoda genus ocurring in south and central America. Pesquisas, 17(1/2):31-38.
Würdig, N.L. & Pinto, I.D. 1993. A New fresh water Ostracoda from southern Brazil. Anais da Academia Brasileira de Ciências, 65(1):89-99.
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Würdig, N.L.; Pinto, I.D. 1999. Pseudocandona pumilis sp. nov. (Ostracoda). Ecological data and distribution in the Tramandaí lagunar system, RS, Southern Brazil. Nauplius, 7:39-51.