Statistical treatment of palynological data from Rio da Batateira and Santana formations (Aptian-Albian) of the Araripe Basin provides mathematical support to paleoclimatic interpretations. In addition to Classopollis and ephedroid pollen. widely accepted as aridity indicators. other typical xerophytic elements include Afropollis spp. https://www.randdsoftindonesia.com/product-category/duo-balls/