Pecos Classification

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The Pecos Classification is a division of all known Ancient Pueblo Peoples culture into chronological phases, based on changes in architecture, art, pottery, and cultural remains. The original classification dates back to consensus reached at a 1927 archæological conference held in Pecos, New Mexico, which was organized by the United States archaeologist Alfred V. Kidder.

Original classification[edit]

The original Pecos Classification contained eight stages of Southwestern prehistory, but it did not specify dates.

  1. Basketmaker I, or Early Basketmaker II
  2. Basketmaker II, or Late Basketmaker II
  3. Basketmaker III, or Post-Basketmaker
  4. Pueblo I Era, or Proto-Pueblo
  5. Pueblo II Era
  6. Pueblo III Era, or Great Pueblo
  7. Pueblo IV Era, or Proto-Historic
  8. Pueblo V, or Historic

Current classification[edit]

Although the original classification has been significantly debated and sometimes modified over the years, the split into Basketmaker and Pueblo eras still serves as a basis for discussing the culture of the Ancient Puebloans of the Four Corners area.

Archaic–Early Basketmaker Era[edit]

8th millennium BC to 12th century BC

The pre-Anasazi culture that moved into the modern-day Southwestern United States after the big game hunters departed are called Archaic. Little evidence for extensive habitation before 8000 BC exists. From evidence near Navajo Mountain, they were nomadic people, hunter-gatherers traveling in small bands. They gathered wild foods when in season, and hunted with stone-tipped spears, atlatls, and darts. Game included rabbits, deer, antelope, and bighorn sheep.

The original classification postulated a Basketmaker I Era which was subsequently discredited due to lack of physical evidence. It was combined with the Archaic Era.

This period was called Oshara Tradition. There was a trend toward a sedentary lifestyle, with small-scale cultivation of plants beginning 1000 BC.

Early Basketmaker II Era[edit]

1200 BC to AD 50

The early Anasazi camped in the open or lived in caves seasonally. During this period, they began to cultivate gardens of maize (flint corn in particular) and squash, but no beans. They used manos and metates to grind corn, and the women made baskets for numerous uses. They had no pottery.

Late Basketmaker II Era[edit]

50 to 500

The people constructed primitive storage bins, cists, and shallow pit-houses. At this stage, evidence suggests that the beginning of a religious and decision-making structure had already developed. Shamanistic cults existed, and petroglyphs and other rock art indicate a ceremonial structure as well. Groups appear to be increasingly linked into larger-scale decision-making bodies.

Basketmaker III Era[edit]

500 to 750

Deep pithouses were developed, along with some above-ground rooms. The bow and arrow replace the atlatl and spear. Plain bisque and some painted black-on-white pottery is made. Cultivation begins of beans, available due to trade from Central America, and edible due to slow cooking in pottery vessels. Wild amaranth and pinyon pine were also staples. People of this era may have domesticated turkeys.

The prototype kivas were large, round, and subterranean.

Pueblo I Era[edit]

750 to 900

The Pueblo I Era saw increasing populations, growing village size, social integration, and more complicated and complex agricultural systems typified this era. The construction and year-round occupation of pueblos begins; the people constructed reservoirs and canals to deal with scarce and irregular water resources. Large villages and great kivas appear, though pithouses still remain in use. Above-ground construction is of jacal or crude masonry. Plain gray bisque predominates in pottery, though some red bisque and pottery decorated in black and white appears.

Pueblo II Era[edit]

900 to 1150

By 1050, Chaco Canyon (in present-day New Mexico) was a major regional center, with a population of 1,500–5,000 people. It is surrounded by standardized planned towns, or great houses, built from the wood of more than 200,000 trees. Thirty-foot-wide (9.1 m) roads, flanked by berms, radiate from Chaco in various directions. Small blocks of above-ground masonry rooms and a kiva make up a typical pueblo. Great kivas were up to 50–70 feet (15–21 m) in diameter. Pottery consists of corrugated gray bisque and decorated black-on-white in addition to some decorated red and orange vessels. The people imported shells and turquoise from other cultures through trading.

During the 12th century, populations began to grow after a decline at the end of the Pueblo II era. More intense agriculture was characteristic, with terracing and irrigation common.

Pueblo III Era[edit]

1150 to 1350

Settlements consist of large pueblos, cliff dwellings, towers and turkey pens. Most villages in the Four Corners area are abandoned by AD1300. The distinction between the Hohokam and Ancient Pueblo people becomes blurred.

Pueblo IV Era[edit]

1350 to 1600

Typically, large pueblos are centered around a plaza. Socially, this was a period of more conflict than cooperation. The people began making kachinas for religious and ritual purposes. Plain pottery supplants corrugated. Red, orange and yellow pottery is on the rise as the black-on-white declines. Cotton is introduced and grown as a commodity.

The Puebloans are joined by other cultures. As early as the 15th century, the Navajo were in the process of migrating into the region from the north. In the next century, the Spanish colonists first came in the 1540s from the south.

Pueblo V Era[edit]

1600 to present

The Spanish dominate and take over sites such as the Acoma Pueblo. Their arrival sends Pueblo subcultures underground.

Notable Puebloan sites[edit]

See also[edit]

References[edit]

  • Catherine M., and H. Wolcott Toll. "Deciphering the Organization of Production in Chaco Canyon (Organization of Production at Chaco Canyon conference papers)." American Antiquity 66.1 (Jan 2001): 5.
  • Kidder, Alfred V. (1927). Southwestern Archaeological Conference. Science 66: 489-91.
  • Kidder, Alfred V. (2000 ed.) "An Introduction to the study of Southwestern Archaeology". Yale University. ISBN 0-300-08297-5