Andrews, G. W. 1966. U.S. Geological Survey Professional Paper. 523-A: A22, plate 3, figs. 22-25.
Type Status:
Holotype
Place:
Diatomite ca. 0.25 mile south of center of Hixton, Blair Quadrangle [Valders Stade, Late Pleistocene], Jackson County, Wisconsin, United States, North America