Abstract The Cretaceous sedimentary sequence at Punta Gorda in southern Belize corresponds only partially to the known stratigraphic column of the Maya Block. In addition to dolomites and anhydrites of the Coban Formation (Aptian-Santonian), rudist-bearing shallow-water carbonates of the Campur Formation (Campanian-Maastrichtian), and the siliciclastic flysch sequence of the Sepur Formation (Maastrichtian-Eocene), pelagic limestones and limestones of debris-flow origin are present at Punta Gorda. They are of Berriasian-Valanginian and Aptian-Albian ages. Today, they are thrust onto dolomites of the Coban Formation and shales of the Sepur Formation. The pelagic limestones are similar in age and lithology to the sedimentary sequence of southwestern Cuba and suggest a common depositional area on the eastern margin of the Maya Block in the Proto-Caribbean Basin.