The dynamics associated with the carbon cycle and the linkage between the oceans, the atmosphere, and land plants provide an opportunity to correlate marine and terrestrial sedimentary sequences using stable isotopes of carbon (δ¹³C), but few studies have tested this approach. To evaluate the possibility of using carbon isotope ratios of bulk sedimentary organic matter derived from land plants (δ¹³C_bulk ) as a chronostratigraphic tool, we are comparing the composite Paleocene-Eocene marine carbon-isotope (δ¹³C_carbonate) record from Zachos et al., (2001) to that of a terrestrial sequence from Colombia. Sediments of the terrestrial rock units were deposited in a transitional setting dominated by mudstones, coals, and small lenses of sandstones (Catatumbo and Barco Formations) and in a mixture of deltaic and fluvial conditions (Cuervos Formation). The stratigraphic control was based on palynological zones for the region. The δ¹³C_bulk values for the studied terrestrial sequence show three carbon-isotope excursions, which correlate closely with those present in the marine record. The δ¹³C _bulk values decreased from -24‰ to -26.5‰ in sediments accumulated during early to middle Paleocene. This shift is commonly associated with the slow recovery in marine primary production that occurred in the aftermath of the extinction event of the Cretaceous-Tertiary boundary. The positive shift in sediments accumulated during the late Paleocene shows δ ¹³C_bulk values increasing from -26.5‰ to -23.8‰. This event is commonly associated with the burial of large amounts of organic matter. The third excursion is found near the Paleocene-Eocene boundary, with values changing from -23.8‰ to -26.5‰. This shift is commonly interpreted to result from a long-term trend toward higher temperatures (52-50 million years ago, M.a.). The analysis of selected biomarker ratios (CPI, Pr/Ph, Paq, ββ/ββ+αβ hopanes) shows some diagenetic transformation. However, no correlation between diagenesis and δ ¹³C_bulk values was detected, thus suggesting that δ ¹³C_bulk could be correlated with δ¹³C _carbonate values. The close correspondence that was found between δ ¹³C_bulk and δ¹³C_carbonate values provides support to the hypothesis that a tight land plant-oceans linkage exists through geologic timescales via the atmosphere.