title: Comment on "Molybdenum isotope evidence for widespread anoxia in mid-Proterozoic oceans".
authors.affiliation: State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China. hfling@public1.ptt.js.cn
authors.forename: H-F
authors.initials: HF
authors.lastname: Ling
authors.forename: J-F
authors.initials: JF
authors.lastname: Gao
authors.forename: K-D
authors.initials: KD
authors.lastname: Zhao
authors.forename: S-Y
authors.initials: SY
authors.lastname: Jiang
authors.forename: D-S
authors.initials: DS
authors.lastname: Ma