Powell, C.L. & Boessenecker, R.W. & Smith, N.A. & Fleck, R.J. & Carlson, S.J. & Allen, J.R. & Long, D.J. & Sarna-Wojcicki, A.M. & Guruswami-Naidu, R.B. (2019)
Geology and Paleontology of the Late Miocene Wilson Grove Formation at Bloomfield Quarry, Sonoma County, California. U.S. Geological Survey Scientific Investigations Report 2019–5021, 77 pp.
DOI: 10.3133/sir20195021