Kleinschmidt reviewed sherd and vessel collections from a number of Frankston phase (ca. A.D. 1400-1650) and Allen phase (ca. A.D. 1650-1800+) sites in the upper Neches River basin (Anderson, Cherokee, Henderson, and Smith counties) and developed a ceramic frequency seriation of those sites more than 25 years ago. That seriation is still useful today, or at least I find it so, because it does seem to provide a good measure of temporal changes in the kinds of decorated ceramic vessels used by these Caddo peoples, as well as a good measure of the direction of changes in ceramic decorative styles
