False.
While no skeletal remains of Clovis have been found, the assumption was that they were the earliest ancestors of Native Americans. Until it was discovered that Native Americans were living all the way down and what is now Chile 2,000 years prior. Now we got footprints in White Sands, New Mexico dating back 22 - 24,000 years, and the bones of giant ground sloths and giant armadillos utilized after they were butchered by the ancestors of Native Americans 33,000 in South America years ago.
Despite the theory that what became DNA Amerindians came here in waves from different places, all remnants found to date have proven to be genetically consistent with modern Native Americans. Even DNA from Luzio, from Brazil 13,000 years ago, originally reconstructed to look more sub-Saharan African, turns out to also be Amerindian.