Author B. Miller R. Graham A. Morgan N. Miller W. McCoy D. Palmer A. Smith J. Pilney Miller, B., Graham, R., Morgan, A., Miller, N., McCoy, W., Palmer, D., Smith, A., Pilney, J., 1994. A biota associated with Matuyama reversed sediments from west-central Illinois. Quaternary Research 41, 350-365. doi:10.1006/qres.1994.1040