The Deinotherium (Proboscidea, Mammalia): an abnormal tusk from Lisbon, the Miocene record in Portugal and the first appearance datum. Evidence from Lisbon, Portugal
An exceptionally favourable stratigraphic and chronologic context concerning the Miocene series in Lisbon allows us to stress
that there are two successive data as far as the Proboscideans' immigration into western Europe is concerned: firstly, that of
Gomphotheres, and later that of Deinotheres. The study of a Langhian (in age) tusk has shown that Deinotherinm havaricum was
still present then. The time span of this species could be accurately recognized. A discussion on the genus Deinotherium is
presented, as well as its occurrence in Portugal and on its ecologic meaning
