MICROPLANCTON DEL TERCIARIO DE TIERRA DEL FUEGO

Elba D Pothe de Baldis

Abstract


MICROPLANCTON FROM TIERRA DEL FUEGO.- Fossil microplankton has been studied from the upper part of the bore San Julío - 1 of Tierra del Fuego. In this first part have been described three species of Hystrichosphaeridium, one of Baltisphaeridium, one of Cannosphaeropsis, seven of Deflandrea, one of Nelsoniella, one of Pterospermopsis, one of Thalassiphora, one of Membranilarnax, and one of Dioxya. The studied interval, Frorn 300 m to 1850 m, corresponds to the Lower Tertiary.

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