TY - GEN AU - Planavsky,Noah J AU - Reinhard,Christopher T AU - Wang,Xiangli AU - Thomson,Danielle AU - McGoldrick,Peter AU - Rainbird,Robert H AU - Johnson,Thomas AU - Fischer,Woodward W AU - Lyons,Timothy W TI - Earth history. Low mid-Proterozoic atmospheric oxygen levels and the delayed rise of animals SN - 1095-9203 PY - 2014///1114 KW - Animals KW - Atmosphere KW - chemistry KW - Biological Evolution KW - Chromium Isotopes KW - Earth, Planet KW - Geologic Sediments KW - Oxidation-Reduction KW - Oxygen KW - analysis KW - Paleontology N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S UR - https://doi.org/10.1126/science.1258410 ER -