The spread of plaza-pyramid complexes across southern Mesoamerica during the early Middle Preclassic period (1000 to 700 BCE) provides critical information regarding the origins of lowland Maya civilization and the role of the Gulf Coast Olmec. Recent excavations at the Maya site of Ceibal, Guatemala, documented the growth of a formal ceremonial space into a plaza-pyramid complex that predated comparable buildings at other lowland Maya sites and major occupations at the Olmec center of La Venta. The development of lowland Maya civilization did not result from one-directional influence from La Venta, but from interregional interactions, involving groups in the southwestern Maya lowlands, Chiapas, the Pacific Coast, and the southern Gulf Coast.
Our archaeological investigations at Ceibal, a lowland Maya site located in the Pasión region, documented that a formal ceremonial complex was built around 950 B.C. at the onset of the Middle Preclassic period, when ceramics began to be used in the Maya lowlands. Our refined chronology allowed us to trace the subsequent social changes in a resolution that had not been possible before. Many residents of Ceibal appear to have remained relatively mobile during the following centuries, living in ephemeral post-in-ground structures and frequently changing their residential localities. In other parts of the Pasión region, there may have existed more mobile populations who maintained the traditional lifestyle of the preceramic period. Although the emerging elite of Ceibal began to live in a substantial residential complex by 700 B.C., advanced sedentism with durable residences rebuilt in the same locations and burials placed under house floors was not adopted in most residential areas until 500 B.C., and did not become common until 300 B.C. or the Late Preclassic period. During the Middle Preclassic period, substantial formal ceremonial complexes appear to have been built only at a small number of important communities in the Maya lowlands, and groups with different levels of sedentism probably gathered for their constructions and for public rituals held in them. These collaborative activities likely played a central role in socially integrating diverse groups with different lifestyles and, eventually, in developing fully established sedentary communities.Mesoamerican archaeology | sedentism | Maya | public ceremony | subsistence R ecent archaeological investigations have shown that the development of agriculture and sedentism was more diverse than the simple model of agriculture leading to sedentism and then to social complexity. In Europe, for example, the farming lifestyle that originated in the Near East spread in complex ways, involving the coexistence of farmers and foragers in relatively small areas and differential adoptions of Neolithic cultural elements in different regions (1-3). Studies of early monuments, such as Göbekli Tepe in Turkey, Watson Brake in Louisiana, and Caral and earlier mounds in the Andes, show that large constructions involving significant collective labor could be built by preceramic people who were still foragers or were at the early stage of farming adaptation (4-7). These emerging understandings lead to important questions about how sedentary and mobile populations interacted and how their relations affected the process of social change. To address these questions, researchers need fine-grained chronological information and a broad spatial coverage, which are not easy to obtain in many cases. A uniquely rich dataset obtained from the Maya site of Ceibal (or Seibal) suggests the possibility that groups with different levels of mobility gathered and collaborated for constructions and public ceremonies, which contrasts with the common assumption that sedentary and mobile groups maintained...
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Although the application of LiDAR has made significant contributions to archaeology, LiDAR only provides a synchronic view of the current topography. An important challenge for researchers is to extract diachronic information over typically extensive LiDAR-surveyed areas in an efficient manner. By applying an architectural chronology obtained from intensive excavations at the site center and by complementing it with surface collection and test excavations in peripheral zones, we analyze LiDAR data over an area of 470 km2 to trace social changes through time in the Ceibal region, Guatemala, of the Maya lowlands. We refine estimates of structure counts and populations by applying commission and omission error rates calculated from the results of ground-truthing. Although the results of our study need to be tested and refined with additional research in the future, they provide an initial understanding of social processes over a wide area. Ceibal appears to have served as the only ceremonial complex in the region during the transition to sedentism at the beginning of the Middle Preclassic period (c. 1000 BC). As a more sedentary way of life was accepted during the late part of the Middle Preclassic period and the initial Late Preclassic period (600–300 BC), more ceremonial assemblages were constructed outside the Ceibal center, possibly symbolizing the local groups’ claim to surrounding agricultural lands. From the middle Late Preclassic to the initial Early Classic period (300 BC-AD 300), a significant number of pyramidal complexes were probably built. Their high concentration in the Ceibal center probably reflects increasing political centralization. After a demographic decline during the rest of the Early Classic period, the population in the Ceibal region reached the highest level during the Late and Terminal Classic periods, when dynastic rule was well established (AD 600–950).
SignificanceThe nature of animal management in Mesoamerica is not as well understood compared with other state-level societies around the world. In this study, isotope analysis of animal remains from Ceibal, Guatemala, provides the earliest direct evidence of live animal trade and possible captive animal rearing in the Maya region. Carbon, nitrogen, and oxygen isotopes show that domesticated and possibly even wild animals were raised in or around Ceibal and were deposited in the ceremonial core. Strontium isotope analysis reveals the Maya brought dogs to Ceibal from the distant Guatemalan highlands. The possible ceremonial contexts of these captive-reared and imported taxa suggests animal management played an important role in the symbolic development of political power.
Excavations in large platforms in the center of Ceibal revealed extensive early Middle Preclassic constructions. They consisted of extensive clay platforms that supported low basal structural platforms. Although the function of the earliest platform, Sulul, during the Real-Xe 1 and 2 phases (950–775 b.c.) is not clear, the one built during the Real-Xe 3 phase (775–700 b.c.) likely supported multiple residential buildings. The emphasis on elevating this domestic space above the natural land surface and the communal labor involved in these constructions indicate that they were most likely inhabited by an emergent elite. These places were continuously remodeled and used until the end of the Middle Preclassic. This new data from Ceibal contributes significantly to our understanding of the processes involved in the transition to a sedentary lifestyle and the development of social and political differentiation in the Maya lowlands.
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