Later in the Mesozoic, during the Cretaceous period (144.2-65 million years ago), broadleaf angiosperms evolved to become the more important group, perhaps profiting from their close relationships with INSECT pollinators and with larger animals which spread their fruits.
Le plus grand arbre connu au Canada est une épinette de Stika de 95 m de hauteur, dénommée le « géant de Carmanah », dans la Carmanah Valley, sur la côte Ouest de l'île de Vancouver.