The Maria Farinha Formation is a geological formation of the Parnaíba Basin in Pernambuco, northeastern Brazil whose strata date back to the Danian stage of the Paleocene, or Tiupampan in the SALMA classification.
The formation comprising limestones, dolomites, marly and sandy limestones has been deposited in a shallow marine platform environment.
The formation has provided fossils of reptiles and fish.
Description The Maria Farinha Formation crops out in the Parnaíba Basin in the northeastern state of Pernambuco of Brazil. The formation registers the Cretaceous-Paleogene boundary at the base of the formation, where it overlies the Maastrichtian Gramame Formation. The thick formation is overlain by the Eocene Tambaba Formation which is overlain by the Plio-Pleistocene Barreiras Formation.Ribeiro de Santana et al., 2011, p.5
Fossil content The following fossils were reported from the formation:Maria Farinha Formation at Fossilworks.org Reptiles Turtles Inaechelys pernambucensisBarbosa et al., 2008De Aráujo et al., 2016, p.495 Tethysuchians Guarinisuchus muniziSena et al., 2017 Hyposaurus derbianusCope, 1885 Dyrosauridae indet. Fish Chondrichthyes Apocopodon sericeusRibeiro de Santana et al., 2011, p.1 Cretolamna appendiculata C. biauriculata C. serrata Hexanchus microdon Myliobatis dixoniSilva et al., 2002 Rhinoptera prisca R. studeri Squalicorax kaupi S. pristodontus Synodonstaspis sp.
See also
South American land mammal ages Guabirotuba Formation, Late Eocene formation of the Curitiba Basin Itaboraí Formation, Early Eocene formation of the Itaboraí Basin Lefipán Formation, Danian formation of Argentina Santa Lucía Formation, Tiupampan type formation of Bolivia
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