Recent excavations at the ancient Maya minor center of Tutu Uitz Na in the Belize River Valley revealed an especially large—about 20 million shells—Middle Preclassic (900–300 BC) shell deposit underlying the plaza. Although marine shell species make up a small percentage of the assemblage, most shells are Pachychilus spp., a common freshwater snail known in the southern Maya Lowlands as jute. This report describes the architectural context and assemblage of the deposit and compares it to similar examples in the region. We propose that the Tutu Uitz Na deposit provides one of the earliest examples of depictions of the Maya primordial sea in an architectural context.

We thank our colleague for his comment, address concerns raised, and encourage future collaborative research to answer important questions about the Middle Preclassic at Cahal Pech.

Recent investigations at Cahal Pech, Belize, documented a previously unrecognized Middle Preclassic (700–500 cal BC) E-Group complex. Located in an open public plaza, the monumental complex likely functioned as a forum for communal public events. In the Late Preclassic, the E-Group was replaced by an ancestor shrine where several royal tombs are located, as well as buildings separating public civic space from private elite space. These shifts in monumental construction temporally track the development of ideological manifestations of power and provide evidence for the formalization of dynastic rulership by an emerging elite class.

In this article, we use the precision of Bayesian modeled radiocarbon dates to reconstruct a generational history of Late Preclassic (300 BC–AD 250) Cerros (Cerro Maya), Belize. This research was made possible by long-curated excavation records and material remains now housed at the Florida Museum of Natural History, Gainesville. Our interpretations build on earlier research and refine the temporal resolution significantly, enabling us to view site development from the perspective of adjacent generations sharing a lived experience. Here we examine material evidence of their collective actions as they built new buildings and renovated aging ones, characterizing their roles in inventing a visual future for the Late Preclassic Maya port that engaged ancestral actions while reinventing the landscape.

While Maya public rituals are often assumed to have developed from domestic practices, caches at Ceibal in Guatemala demonstrate the concurrent emergence of distinct domestic and public rituals. During the Middle Preclassic period (c. 1000–350 BC), caches in domestic areas were associated with construction phases—deposited on floors or within construction fills. In the public plaza, however, caches were deposited in intrusive pits. Later, domestic and public ritual practices became more similar. By focusing on deposition processes and deposit context, rather than content, it is possible to recognise distinct ritualised activities that are sometimes obscured by predefined categories such as ‘cache’.

This study uses neutron activation analysis of ceramics to examine economic change and increasing social complexity at the Preclassic Maya site of Cahal Pech in Belize (1200 cal BC–cal AD 300). Seven compositional groups were identified from the site's civic-ceremonial centre and two peripheral residential groups. Analyses indicate that both utilitarian and non-utilitarian ceramics were locally produced as early as 1200 cal BC, and that by c. 700 cal BC, fineware vessels were being exported into neighbouring parts of Guatemala. These results provide direct evidence for economic interaction between Maya lowland communities and for their increasing socio-political complexity.

The site of Ceibal was founded around the beginning of sedentary life in the Maya lowlands. Excavations at the Karinel Group within the site reveal domestic structures and ritual deposits dating to the Middle Preclassic, Late Preclassic, and Terminal Preclassic periods (c. 1000 BC–AD 300). The results complement data from Ceibal's Central Plaza and publications on early households in other regions of the lowlands, inviting future investigations of temporal and geographic variation in Preclassic Maya domestic rituals.

Excavations at Ceibal in Guatemala have recovered numerous polished celts from contexts dating throughout the Preclassic Maya occupation of the site. The celts are made of different types of greenstone, and most were deposited in caches in public areas close to ceremonial structures. Recent study shows how deposition practices changed over time. Furthermore, microwear analysis suggests that the majority of celts did not have a practical function. It is argued, instead, that the caches of greenstone celts represent public rituals relating to the establishment of early Preclassic elites.