Late Mesozoic marine Antarctic fi shes: future perspectives based on the newly collections recovered in the Ameghino and Lopez de Bertodano Formations

Abstract

Nowadays, notothenioids are the teleostean group that dominates marine Antarctic waters.However, during the Mesozoic a diverse ichthyofauna inhabited the sea that surrounded Antarctic. Wepresent the preliminary results of the last two Argentinian Antarctic i eld expedition to the LateJurassic of Antactic Peninsula (Longing Gape) and Cretaceous-Paleogene of Seymour (=Marambio)Island. The i sh material recovered is extremely abundant and their further detailed study may providesignii cant clues into the taxonomy and paleobiogeography of the mesozoic antactic ichthyofaunas.