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Miocene and Pleistocene marine deposits in the Cape Verde Archipelago are represented by a series of thin, transgressive sandy-bioclastic limestones that typically occur between subaerial and/or submarine volcanic flows. This position within volcanic flows makes them an ideal paleobathymetric case study, because the submarine/subaerial passage zone above them provides a reliable and independent indicator of paleodepth. In terms of paleoichnology, the older Miocene sediments are characterized by the Thalassinoides ichnoassociation, whereas, Pleistocene sediments are characterized by the Macaronichnus–Dactyloidites ichnoassociation.

The fair-weather suite of the proximal Cruziana ichnosubfacies is represented by the ichnotaxa Dactyloidites, Bichordites, Cardioichnus, Phycodes, Teichichnus, aff. Taenidium, Palaeophycus and Thalassinoides in addition to the Thalassinoides ichnoassociation.

The …