Flowering plants (angiosperms) appeared during the Cretaceous before dinosaurs got wiped out, and there is fossil evidence of insects pollinating non-flowering

Flowering plants (angiosperms) appeared during the Cretaceous before dinosaurs got wiped out, and there is fossil evidence of insects pollinating non-flowering plants (gymnosperms) like ferns and confers even earlier than that: https://repository.si.edu/server/api/core/bitstreams/152b12da-a614-4633-b063-26caa81dee16/content https://repository.si.edu/server/api/core/bitstreams/152b12d...