Los tiburones estuvieron a punto de desaparecer

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Las investigadoras Leah Rubin y Elizabeth Sibert, afirmaron que durante el Mioceno temprano, los tiburones desaparecieron del registro fósil hace 19 millones de años, disminuyendo su abundancia en más del 90%.

Con escamas y dientes desprendidos por tiburones y distintos peces que se acumulan en el fondo del mar, las científicas pudieron construir un registro de la diversidad de tiburones que abarca los últimos 40 millones de años.