Extended Data Fig. 1: Sampling completeness over time.
From: Biogeographic response of marine plankton to Cenozoic environmental changes
Sample coverage values calculated for occurrences in different palaeolatitudinal bands for each million year slice for species, ecogroups and morphogroups. Note that small sample sizes limit confidence in estimates left of the blue dotted line (≥ 58 Ma). Also see Extended Data Fig. 2.
