We do not know these beetles as Cretaceous fossils, and we don't know whether they acted as pollinators. But we can see their characteristic activity preserved as damage on fossil leaves. Mesozoic Plants and Seed Dispersal Seed dispersal by non-biological agents Wind dispersal of plant seeds . How plants disperse by floating seeds, part 1 . How plants disperse by floating seeds, part 2 .
Lemurs are vital for dispersing plant seeds in some Madagascar forests.
From Science Daily. Treezilla The earliest ants , around 92 Ma. From the Washington Post , January 1998. Ants and acacias . Another great story of co-evolution between plants and animals.