Figure 5. Geographic distribution of genetic types of Globigerinella siphonifera and Globigerinoides ruber.

Gray shading indicates the relative abundance of each morpho-species in planktonic foraminiferal assemblages from surface sediments, interpolated from data in the MARGO database [2], [79]. The species delimitations are according to the literature and the method noted in red in the left corners of the maps. The fourth map corresponds to a synthesis. Geographic location data from [9], [13], [16], [17], [29], [31], [32], [33], [36], [39], [45], [60], [80], [81].