[eng] The presence of the longirostrine crocodilian Tomistoma cf. lusitanica (Vianna & Moraes, 1945) in the Lower Tortonian of Menorca (Baleares Islands, Spain) is recorded. This is a stenotherm, tropical form whose palaeoecologic contribution to characterize deltaic-torrential environments is discussed. The presence of these Miocene crocodilians is an excellent biological indicator of the tropical and/or subtropical conditions that prevailed during Lower Tortonian in what is now Menorca. Also it provides a review and collection of reptile fossils dating from the Balearic Islands.