Meco, Joaquín, Alejandro Lomoschitz, and Juan Francisco Betancort. 2017. “Early Pliocene Tracer of North Atlantic and South Pacific Sea Surface Currents: Janthina Typica (Bronn, 1860) (Mollusca: Gastropoda)”. Revista Mexicana De Ciencias Geológicas 33 (2). https://doi.org/10.22201/cgeo.20072902e.2016.2.496.