"The structural and stratigraphic geology of the island of Majorca is outlined in order to show the stratigraphic positions in the lower and middle Miocene occupied by the foraminiferal species cited in the text. Discordance exists between the lower Miocene (Burdigalian) and the middle Miocene (Helvetian-Tortonian). In the Burdigalian, Miogypsina mediterranea is associated with foraminifera of 'Caribbean' type which are frequent in the "upper Oligocene" and lower Miocene of Central America, as well as in the Balearic islands. In the Helvetian-Tortonian, other associations, which are very different from these but which are frequent in the middle and upper Miocene and Pliocene of the Mediterranean zone, are found. Miogypsina has not previously been observed in the Helvetian-Tortonian of Majorca."