Determining the history of resin exudation and solidification based on the relationship between the relative abundances of pseudoinclusion types and amber colour.

–: not present; +: uncommon; ++: common; +++: abundant, n.o.: not observed (due to opacity), n.d.: not described. Mobility (of resin); inferred from the pseudoinclusion assemblage preserved in each colour of amber (I: immobile; M: mobile). Environment (of solidification); inferred from inclusion assemblage and/or amber morphology. (B: upper tree branches; T; tree trunk; G: ground surface; R: underground (root resin); P: pond). Inclusions were not observed in milky brown amber (sample ID: Minerva-2a 1956.7); therefore, it is not included in the table. Modified from [30].*Most common interpretation based on pseudoinclusion abundancesDetermining the history of resin exudation and solidification based on the relationship between the relative abundances of pseudoinclusion types and amber colour.