<P> In contemporary times, the people and their archaeological culture were referred to as Anasazi for historical purposes . The Navajo, who were not their descendants, called them by this term . Reflecting historic traditions, the term was used to mean "ancient enemies". Contemporary Puebloans do not want this term to be used . </P> <P> Archaeologists continue to debate when this distinct culture emerged . The current agreement, based on terminology defined by the Pecos Classification, suggests their emergence around the 12th century BC, during the archaeologically designated Early Basketmaker II Era . Beginning with the earliest explorations and excavations, researchers identified Ancestral Puebloans as the forerunners of contemporary Pueblo peoples . Three UNESCO World Heritage Sites located in the United States are credited to the Pueblos: Mesa Verde National Park, Chaco Culture National Historical Park and Taos Pueblo . </P> <P> Pueblo, which means "village" in Spanish, was a term originating with the Spanish explorers who used it to refer to the people's particular style of dwelling . The Navajo people, who now reside in parts of former Pueblo territory, referred to the ancient people as Anaasází, an exonym meaning "ancestors of our enemies", referring to their competition with the Pueblo peoples . The Navajo now use the term in the sense of referring to "ancient people" or "ancient ones". </P> <P> Hopi people used the term Hisatsinom, meaning ancient people, to describe the Ancestral Puebloans . </P>

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