Eukaryotes expansion into non-marine habitats prohibited by nitrogen limitation during the mid-Proterozoic

Total organic carbon (TOC, ppm), total nitrogen (TN, ppm), Al2O3 (wt%), P (ppm), Mo (ppm), δ13C (‰), δ15N (‰) and related ratios of samples from the Dagushi, Bingmagou, Baicaoping, and Puyu Formations are shown in the Table. Samples were collected along four formations from the Henan Province, China.

中国河南省大石坡组（Dagushi Formation）、兵马沟组（Bingmagou Formation）、草坪组（Baicaoping Formation）及蒲峪组（Puyu Formation）的样品的总有机碳（Total organic carbon, TOC, ppm）、总氮（Total nitrogen, TN, ppm）、三氧化二铝（Al₂O₃, wt%）、磷（P, ppm）、钼（Mo, ppm）、碳同位素δ¹³C（‰）、氮同位素δ¹⁵N（‰）及相关比值均列于下表。样品采自中国河南省的上述四个地层。