LAS VEGAS (AP) — Several dignitaries received plaster replicas of an Ice Age mammoth tooth on Monday to help mark the dedication of a new national monument in a fossil-rich area at the northern edge of the Las Vegas valley. The designation had been sought by paleontologists, business groups, local governments and other organizations both for the site's historical significance and its potential as a tourist attraction. Lynn Davis, of the Tule Springs National Monument Coalition, noted that national monument designation capped a decades-long campaign by paleontologists, business groups, local governments and others focused on the site's historical significance and its potential as a tourist attraction. Other fossils prove that bison, American Lions, sloths the size of modern automobiles and an Ice Age camel known as a camelops once visited the more than 35-square-mile site bordered today by the cities of Las Vegas and North Las Vegas, unincorporated Clark County, the Paiute reservation and the vast Desert National Wildlife Refuge.