Abstract
The lithostratigraphic unit known as “Batateira beds” is often cited in the literature on the geology of the Araripe Basin. This interval was already recognized both in the Cariri Sub-basin and in the Feitoria Sub-basin. It has been considered a datum for regional correlation, due to its basin-wide occurrence and, apparently, reduced thickness. However, despite the importance assigned to it, the interval was never formally described, which led the name “Batateira beds” to be used with distinct meanings, making urgent the discussion and formalization of the interval. Lithostratigraphic, palynological and total organic carbon analyses on the borehole 1-PS-06-CE and its correlation with an outcrop in the Batateira river margin (originally cited as a reference section of the interval) allowed a more precise characterization and a formal proposal of the interval, under the name “Fundão Member”, with the establishment of a holostratotype, represented by the outcrop in Batateira river (Sítio Fundão, Crato, Ceará State, Brazil), and a supplementar stratotype, composed of cores from the borehole 1-PS-06-EC (Salobro village, Abaiara, Ceará State, Brazil).
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