Figure S1 - Locations of data; Figure S2 - The stratigraphic range of Palaeocene taxa at Site 1262; Figure S3 - Summed coefficient of variation metric (∑CV) ranked in order.; Table S2 – Ecological groupings used in this study.; Raw data (species, size and weights) from Ecosystem function after the K/Pg extinction: decoupling of marine carbon pump and diversity

Figure S1 - Location of ODP Site 1262 at Walvis Ridge, South East Atlantic in yellow. Plate reconstruction for the K/Pg interval created using the R package Chronosphere and Seton et al. (2012) configuration [1]. Additional sites discussed in the text are also included in red.; Figure S2 - The stratigraphic range of Palaeocene taxa at Site 1262. Colours denote ecogroups, Green = surface symbiotic, Light blue = transitional, dark blue= thermocline and orange = survivors and opportunists (see methods for full details). Ages are based on the tuning of the records to the latest orbital solution La2011, [2]. Horizontal black dashed line represents the K/Pg boundary and coloured numbered lines relate to significant steps in the recovery process; 1 – initial partial recovery of the surface-to-deep carbon gradients, 2 – ‘Full’ carbon gradient recovery, 3 –appearance of photosymbiotic ecologies (see [3] for details) and 4 – ‘Full’ planktic biotic recovery.; Figure S3 – Summed coefficient of variation metric (∑CV) ranked in order. Red dashed line indicates an inflection point at the higher values of (∑CV), denoting above background variation (following the method of [4,5].; Table S2 – Ecological groupings used in this study. The transitional taxa are those taxa lineages that start out as thermocline dwellers, but later adopt a surface and/or symbiotic ecology. Within the Eoglobigerina lineage, E. eobulloides and E. edita are thermocline dwellers whereas E. spiralis is a surface dweller [6–8]. Within the Pramurica lineage, P. taurica and early P. pseudoinconstans and P. inconstans were thermocline dwellers, but later P. pseudoinconstans and P. inconstans and P. uncinata were surface symbiotic species [8]. For Cretaceous taxa, where no species-specific data was available the generic level ecogroup was used.; Raw data used in this study.