Análise estratigráfica e tafonômica da sequência Neopraguiana - Eoemsiana do setor nordeste do sítio urbano de Ponta Grossa, Paraná, Brasil

Abstract

New interpretations of paleoenvironmental sedimentary strata regarding Sequence B of Ponta Grossa Formation (Lower Devonian of the Paraná Basin) are presented here. The taphonomic study developed in the stratigraphic surface sections provided data which, together with other sections correlated, were sufficient to diagnose shoreface to offshore environments throughout the sequence. In these environments were identified four taphonomic associations that have distinguished due to different taphonomic signatures, such as degree of autochthony/allochtony, diachronism and sedimentary processes. As a result it was concluded that possibly the record taphonomic fauna Malvinokaffric in Ponta Grossa Formation can be more allochthonous than has hitherto been interpreted.