In the last few years several mastodont remains have been dredged from the sand-pit of the Hoogdonk brickyard in Liessel (province of Noord-Brabant, the Netherlands). The material comprises two complete crowns, separately discovered, of molars (M3) from two left lower jaws of Mammut borsoni (Hays, 1834) and a fragment of a juvenile molar of Anancus arvernensis (Croizet et Jobert, 1828). The specimens are described in some detail in connection with former finds of both mastodonts from the Netherlands, the zygodont molars of M. borsoni and the bunodont molar of A. arvernensis representing different structural crown-types that are distinguished in mastodonts. Remains of the late pliocene mastodonts M. borsoni and A. arvernensis are reported to have been found in association in several localities in Europe, but Liessel is the first properly localized record from the Netherlands. It is argued, that forest, possibly wetland forest, could have been the main habitat for both Proboscideans. The implications of the obvious difference in molar structure for a differential feeding pattern is shortly mentioned in a tentative way.