ESR dating at K and X band of northeastern Brazilian megafauna

Kinoshita, Ângela; Franca, Alcina Magnolia; Almeida, José Augusto Costa de; Figueiredo, Ana Maria G.; Nicolucci, Patrícia; Graeff, Carlos Frederico de Oliveira; Baffa, Oswaldo

doi:10.1016/j.apradiso.2004.08.007

Cited by 41 publications

(13 citation statements)

References 8 publications

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“…Na conversão de De para idade, utilizou-se a taxa de dose de 1 mGy/ano, que foi o valor encontrado para a amostra de Toxodon sp., da Formação Touro Passo, Rio Grande do Sul. Este valor corresponde a taxas de doses típicas que foram encontradas em outros trabalhos de datação (Kinoshita et al, 2002(Kinoshita et al, , 2005(Kinoshita et al, , 2008Baffa et al, 2006), sendo considerada uma aproximação razoável (ver Tabela 1).…”

Section: Cronologia E Interpretação Paleoambientalunclassified

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Megafauna do Pleistoceno superior de Sergipe, Brasil: registros taxonômicos e cronológicos

Dantas¹,

Porpino²,

Bauermann³

et al. 2011

Rev. bras. paleontol.

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LATE PLEISTOCENE MEGAFAUNA FROM SERGIPE, BRAZIL: TAXONOMIC AND CHRONOLOGICAL RECORDS. The Sergipe State is included in the Intertropical Region of Brazil (= IRB), and its fauna of large (biomass > 44 kg) and megamammals (biomass > 1000 kg) is still unknown. This paper reports three taxa for Fazenda Charco locality: Toxodon platensis Owen, Smilodon populator Lund, and Pachyarmatherium brasiliense Porpino, Fernicola & Bergqvist; the latter constitutes the first record for this northeastern state of Brazil. Ages for the three faunal localities (Fazenda Elefante, Gararu Municipality; Fazenda Charco and Fazenda São José, Poço Redondo Municipality) are estimated between 50,000 and 38,000 years BP, and this period of time includes two different climates. Finally, the present authors are engaged in an ongoing project to elucidate in more detail the ecology of the species found in the IRB.

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Section: Cronologia E Interpretação Paleoambientalunclassified

“…Santos et al, 2002;Alves et al, 2007), paleopatologia (Melo et al, 2007) e, nos últimos anos, a cronologia desta fauna, através da utilização de métodos alternativos de datação de fósseis ou sedimentos associados (e.g. Faure et al, 1999;Kinoshita et al, 2005Kinoshita et al, , 2008.…”

Section: Introductionunclassified

Megafauna do Pleistoceno superior de Sergipe, Brasil: registros taxonômicos e cronológicos

Dantas¹,

Porpino²,

Bauermann³

et al. 2011

Rev. bras. paleontol.

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“…A única datação disponível para Xenorhinotherium bahiense é a apresentada por Kinoshita et al (2005), encontrada através da técnica RSE, que indica uma idade de 39±9 mil anos AP em fósseis coletados no Estado da Paraíba.…”

Section: Discussionunclassified

Megafauna do Pleistoceno final de Matina, Bahia, Brasil: sistemática, cronologia e paleoecologia

Lobo¹,

Scherer²,

Dantas³

2015

Rev. bras. paleontol.

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-LATE PLEISTOCENE MEGAFAUNA FROM MATINA, BAHIA, BRAZIL: SYSTEMATIC, CHRONOLOGY AND PALEOECOLOGY. Fossils of Pleistocene mammals are well-represented in all Northeastern Brazil. In Bahia State these are found in caves and tanks fossiliferous outcrops. This paper focuses on the study of fossil mammals from the tank known as "Sítio Novo", in the municipality of Matina, Bahia. The research identifi ed seven taxa: Megatheriidae (Megatheriinae, Eremotherium laurillardi), Mylodontidae, Glyptodontidae, Macraucheniidae (Macraucheninae, Xenorhinotherium bahiense), Toxodontidae, Gomphotheriidae (Notiomastodon platensis) e Camelidae. This locality has one of the most diverse records of extinct mammalian fauna until now among the tanks found in Bahia. Based on the studied assemblage and dates of the same taxa from this and others assemblages, we suggest that the local fauna lived during the late Pleistocene.Key words: megafauna, mammals, paleoecology, chronology, late Pleistocene, Bahia.RESUMO -Os fósseis de mamíferos pleistocênicos são bem representados em todo o Nordeste do Brasil. No Estado da Bahia são encontrados em depósitos de cavernas e tanques. O presente trabalho tem como foco o estudo de fósseis de mamíferos provenientes do tanque "Sítio Novo", Município de Matina, Bahia. Foram identifi cados sete táxons: Megatheriidae (Megatheriinae, Eremotherium laurillardi), Mylodontidae, Glyptodontidae, Macrauchenidade (Macraucheninae, Xenorhinotherium bahiense), Toxodontidae, Gomphotheriidade (Notiomastodon platensis) e Camelidae. Este depósito é um dos mais diversos registros de mastofauna extinta, conhecido até o momento, para tanques da Bahia. Com base na assembleia estudada e em datações dos mesmos táxons desta e de outras localidades, pode-se sugerir que esta fauna viveu durante o Pleistoceno fi nal.

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“…The fossil content of these tanks was deposited during the late Pleistocene, with available electron spin resonance (ESR) ages dating it to between 63,000 to 10,000 years BP (e.g. Kinoshita et al 2005, Silva 2009, Dantas et al 2011 Couto (1956); the material is a single isolated osteoderm collected in the Jurua River, in the state of Acre.…”

Section: Introductionmentioning

confidence: 99%

On the fossil Remains of Panochthus Burmeister, 1866 (Xenarthra, Cingulata, Glyptodontidae) from the Pleistocene of southern Brazil

Ferreira

Zamorano

Ribeiro

2015

An. Acad. Bras. Ciênc.

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The genus Panochthus represents the last lineage of "Panochthini" recorded in the Pleistocene. This genus has a wide latitudinal distribution in South America, and in Brazil it occurs in the southern and northeastern regions. In this paper we describe new material (isolated osteoderms and caudal tube fragments) assigned to Panochthus from the state of Rio Grande do Sul (southern Brazil) and discuss some taxonomic issues related to Panochthus tuberculatus and Panochthus greslebini based on this material . The occurrence of P. greslebini is the first for outside the Brazilian Intertropical Region. In addition, we describe new diagnostic features to differentiate the osteoderms of P. greslebini and P. tuberculatus. Unfortunately, it was not possible to identify some osteoderms at the species level. Interestingly, they showed four distinct morphotypes characterized by their external morphology, and thus were attributed to Panochthus sp. Lastly, we conclude that in addition to P.tuberculatus registered to southern Brazil, there is another species of the genus, assignable to P. cf. P. greslebini. Our analysis reinforce the reliability of caudal tube characters for the classification of species of Panochthus.

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ESR dating at K and X band of northeastern Brazilian megafauna

Cited by 41 publications

References 8 publications

Megafauna do Pleistoceno superior de Sergipe, Brasil: registros taxonômicos e cronológicos

Megafauna do Pleistoceno superior de Sergipe, Brasil: registros taxonômicos e cronológicos

Megafauna do Pleistoceno final de Matina, Bahia, Brasil: sistemática, cronologia e paleoecologia

On the fossil Remains of Panochthus Burmeister, 1866 (Xenarthra, Cingulata, Glyptodontidae) from the Pleistocene of southern Brazil

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