Social termites and ants first appear in the Early Cretaceous, and advanced social bees have been found in Late Cretaceous rocks but did not become abundant until the Middle Cenozoic.
As termites e formigas sociais apareceron no Cretáceo temperán, e as abellas sociais avanzadas atopáronse en rochas do Cretáceo tardío mais non se fixeron abondosas ata o Cenozoico medio.