Organic walled microfossils from vulcanoclastics rocks, Serra Geral Group: hints to track paleoenvironmental change during the Early Cretaceous - Del Mouro, Lucas; Janasi, Valdecir de Assis; Lima, Evandro F. de; Waichel, Breno; Rossetti, Lucas. M. M; Cruz, V. G. P.; Silva, M. S. (Encontro dos Pesquisadores de Pós-Doutorado do IGc-USP, 2021)