In this study, I use the type-variety-mode analysis to define the diagnostic ceramic material for the Ik'hubil Ceramic Complex dating to the Terminal Classic (ca. a.d. 780–930/1000). The percentages of shared ceramic content indicate that multiple sites in the mid-to-lower Sibun Valley are members of an Ik'hubil Ceramic Sphere. My preliminary analyses of sites in the lower Belize River valley suggest that the Ik'hubil Sphere may extend across a broader area of north-central Belize during the Terminal Classic, discrete from the Spanish Lookout Sphere in the upper Belize Valley. Northern Yucatec traits are identified in ceramics and architecture in the eastern Sibun and Belize Valleys, along with marked changes in foodways. The presence of trading diasporas and more intimate social relationships, such as intermarriage, may explain this mix of local and hybrid forms of material culture introduced by the ninth century in this part of the eastern Maya Lowlands.
