by Laura A. Halverson
Abstract of Masters Thesis
Department of Anthropology
University of Wisconsin-Milwaukee
2004
During the 1935 and 1936 field seasons, W.C. McKern of the Milwaukee Public Museum and Ralph Linton of the University of Wisconsin led students in excavations of the Clam and Spender Lake Mounds and the surrounding areas and campsites. Based on this fieldwork, McKern described a new variant of the Late Woodland in northwestern Wisconsin, which he called The Clam River Focus.
Since the publication of McKern's Clam River report in 1963, in which he introduced a new pottery type termed Clam River wrapped-stamped globoid, these ceramics have become synonymous with the Clam River manifestation in northwestern Wisconsin. Researchers that have worked in the area often referred to McKern's pottery type, but also expanded into include multiple Clam River sub-categories. Still, there is continuing controversy concerning the variation within Clam River Ware.
The research presented here includes an attribute based analysis of McKern's collection of Clam River ceramics from the Clam and Spencer Lake type sites. The collection housed at the Milwaukee Public Museum and is supported by notes, photographs, and maps. This analysis describes the range of variation of ceramics within the Clam River type collection. The conclusions support an expansion of McKern's original description of Clam River Ware. At least six distinct ceramic categories are identified within the original Clam River collection. Aztalan Collard sherds appear in the collection, as well as St. Croix Series: Dentate Stamped Variety, a minimum of one unnamed incised type, Blackduck-like pottery, and two provisional types called Mound Beach Cord-Marked and Mound Beach Twisted Cord.
In addition, analysis of available provenience data indicates that less than 6.75% of the ceramics in the collection were recovered from mound contexts. The bulk of the Clam River ceramic assemblage was recovered from non-mound, domestic proveniences.
Finally, a review of calibrated date ranges for the Clam Lake and Spencer Lake material suggests an initial late Middle Woodland occupation circa calibrated AD 540 to AD 760, followed by a Late Woodland occupation spanning calibrated AD 800 to AD 1260.