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Kietzmann, D.A. and Olivo, M.S. 2020. Palaxius chosmalalensis n. isp., a new crustacean microcoprolite from the Lower Cretaceous of Argentina and new criteria for the classification of ichnospecies of Palaxius . Revista de la Asociación Geológica Argentina. 77, 3 (Sep. 2020), 353-365.