A large notosuchian (Mesoeucrocodylia) tooth from the Adamantina Formation of Goiás state, Brazil

Abstract

Here, we describe an oxidized mesoeucrocodylian tooth from the Adamantina Formation (Bauru Group) of southern Goiás state in Brazil. Despite poor preservation, several morphological features permit identification as an indeterminate sphagesaurian: bulbous triangular crown with a ‘teardrop-shaped’ cross-section; and strong constriction between the crown and deep root. The Adamantina Formation tooth is not only the first notosuchian recorded from the mid-west region of Brazil, but also represents one of the largest sphagesaurians ever described.