Yochelson E. L., Webers G. F. (2006). A restudy of the Late Cambrian molluscan fauna of Berkey (1898) from Taylors Falls, Minnesota. Minnesota Geological Survey Report of Investigations. 64: 1-60.
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Yochelson E. L., Webers G. F.
2006
A restudy of the Late Cambrian molluscan fauna of Berkey (1898) from Taylors Falls, Minnesota
Minnesota Geological Survey Report of Investigations