Article
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA  (2015)

Sulfur-cycling fossil bacteria from the 1.8-Ga Duck Creek Formation provide promising evidence of evolution's null hypothesis

Schopf J.W., Kudryavtsev A.B.; Walter M.R., Van Kranendonk M.J.; Williford K.H., Kozdon; R, Valley J.W.; Gallardo V.A., Espinoza; C., Flannery D.T.