“…This period is marked by the rise of angiosperms, social insects, and early mammals (Benton, 2010;Lloyd et al, 2008;Meredith et al, 2011) but also by the fact that terrestrial diversity exceeded marine diversity for the first time (Vermeij and Grosberg, 2010). Discoveries based on Burmese amber fossils have provided important insights to the diversification of bryophytes Hedenäs et al, 2014;Heinrichs et al, 2012Heinrichs et al, , 2014a, the evolution of insect-mediated pollination (Cardinal and Danforth, 2013;Poinar and Danforth 2006;Ren et al 2009), and the early diversification of ants (Barden and Grimaldi, 2014). However, little attention has been given to ferns in Burmese amber despite the occurrence of dispersed polypod sporangia (Grimaldi et al, 2002) and the polypod-like fossil Cretacifilix fungiformis (Poinar and Buckley, 2008).…”