Studies of Cretaceous age mesofossil floras – assemblages of small carbonaceous plant fossils isolated from poorly consolidated sediments – have provided a wealth of new insights into the early fossil history of angiosperms (for references, see Friis et al., 2011). The fossils recovered from such mesofloras include well‐preserved flowers, fruits and seeds that can be compared in detail with those of living plants to provide an integrated picture of early angiosperm evolution. Data from mesofossil floras have also provided many of the fossil calibrations used to model the age of different angiosperm clades based on molecular data (Magallón & Sanderson, 2005; Beaulieu et al., 2015; Magallón et al., 2015). From the Early Cretaceous these kinds of fossils have so far only been discovered in deposits from Portugal and eastern North America, where they are sometimes abundant, and often have an exquisite preservation of cellular details.