Brachiopoda (Strophomenataand Rhynchonellata) from the Devonian of the Paraná Basin, Brazil

Abstract

Rhynchonelliformea brachiopods from the Devonian of the Paraná Basin have been known and studied since the 19th century. Since then, several brachiopod taxa have been proposed for the Devonian of the Paraná Basin, but they have never been properly revised. This study focused on reviewing the supposed occurrences of “Coelospira? colona”, “Meristella septata”, and “Chonostrophia andina”. From this, the following conclusions were reached: Chonostrophia andina is synonymous with the new species recognized here and named Chonostrophia raquelae sp. nov.; the presence of Coelospira in the Devonian of the Paraná Basin was not confirmed; the specimens that have been called “C.? colona” in the literature are actually Australocoelia; the genus Meristelloides and its type species were revised, and “Meristella septata” is synonymous with Meristelloides riskowskii. Finally, it was recognized that the migration of Chonostrophia from the Emsian to the Eifelian to Bolivia may be related to the Upper Zlichov-Daleje or Choteĉ events. The migration from the Eifelian of Australocoelia to the Parnaíba Basin (Brazil) may be related to the Lower Kaĉák event. All species discussed here preferred to inhabit the transitional offshore environment.