THE AMERICAN MASTODONT (MAMMUT-AMERICANUM) IN NEW-MEXICO

There are only four well-documented records of the American mastodont (Mammut americanum) from New Mexico. The two previously published occu rrences are both from the Sandia Mountains in north-central New Mexico at elevations above 2,000 m; Sandia Cave in Sandoval County and Tree Spring in Bernalillo County. Two new records are from gravel pits in t he Rio Grande Valley in the central part of the state; one from near L os Lunas in Valencia County and a second near Lemitar in Socorro Count y. These few occurrences indicate that M. americanum was a rare forest inhabitant of New Mexico during the Pleistocene.