Análise das pegadas fósseis de tetrápodes do Permiano Superior da Bacia do Paraná

Detalhes bibliográficos
Ano de defesa: 2004
Autor(a) principal: Silva, Rafael Costa da
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal do Rio de Janeiro
Brasil
Museu Nacional
Programa de Pós-Graduação em Ciências Biológicas (Zoologia)
UFRJ
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://hdl.handle.net/11422/3038
Resumo: The objectives of this dissertation are to identify, describe and interpret the fossil footprints of the Permian Paleofaunas tetrapods and to analyze the characteristics of the environments where they were produced in Irati, Rio do Rasto and Corumbataí formations. The material comprises six samples with ichnofossils from Rio do Rasto Formation (São Jerônimo da Serra, PR) and others 25 from lrati Formation (Guapirama, PR, Portelândia e Perolândia, GO), besides 21 photographies and two plastic maps drew on the footprints from Corumbataí Formation (Taguar, SP). The ichnofossils from lrati Formation were identified as lchnogen. nov. A ichnosp. nov. A and atributted to mesosaurid reptiles. They were originated under the action of the storm waves in a tidal flat depositional system and it would have been produced during the swimming next to the bottom. The footprints from Corumbataí Formation were identified as Tridactylichnium ichnosp. And atributted to the archosauromorphs, probably Euparkeriidae. The trackmaker were semibipeds with functionally tridactyl hands and feet when walking and running. Ln the Rio do Rasto Formation occurs two kinds of footprints, identified as Rhynchosauroides ichnosp. nov. A and Dicynodontipus ichnosp. Atributed respectively to Lepidossauromorpha and Therapsida. These ichnofossils were produced in the border of a low lake after the entrance of debris flows under a small edge of water. R. ichnosp. nov. A corresponds to the first ichnospecies of this ichnogenus described at the South Hemisfer. The rock layers where they occur were originated in the lower triassic or during the permotriassic transition. The footprints of the Passa Dois Group represent natural and homogene animais populations, being that three (Tridacty/ichnium ichnosp., Rhynchosauroides ichnosp. nov. A e Dicynodontipus ichnosp.) of the four ichnotaxa correspond to animais without osteologic register in this geologic unit.