2015-03-202015-03-202010-06TÁVORA, Vladimir de Araújo; SANTOS, André Augusto Rodrigues dos; NOGUEIRA NETO, Ignácio de Loiola Álvares. Eventos biológicos da Formação Pirabas (Mioceno Inferior). Revista Brasileira de Geociências, São Paulo, v. 40, n. 2, p. 256-264, jun. 2010. Disponível em: <http://ppegeo.igc.usp.br/pdf/rbg/v40n2/v40n2a10.pdf>. Acesso em: 18 mar. 2015.0375-7536https://repositorio.ufpa.br/handle/2011/6460This work deals the recognition of the global, regional and local biologic events in the Pirabas Formation based on the modern concepts of the analysis and the geobiological evolution of sedimentary basins integrating the crustal geologic processes of the Neogene with the phylogenetic and adaptative responses of the marine organisms. Were recognized global bioevents of innovation and radiation in the mollusks and sirenids, regional bioevents of the radiation, and geographical spreading in mollusks, decapod crustaceans, echinoids, scleractinian corals, bryozoans, ostracods and foraminifera. Also is characterized local bioevents of the geographical spreading in the plants, stenobiontic community and ecophenotypics changes in taxa also did lived in Caribbean biogeographic province.porAcesso AbertoBiogeografia históricaFormação PirabasMioceno InferiorGeologia históricaPará - EstadoPiauí - EstadoMaranhão - EstadoAmazônia brasileiraArtigo de Periódico