Normapolles
Normapolles is an extinct pollen group that arose in the Cenomanian. Normapolles persisted until the early Oligiocene Epoch but were reduced in diversity by the early Eocene Epoch. North America's southern animal biome approximately correspond with the Normapolles palynofloral province.
Normapolles is characterized by a triangular amb and an internally complex tricolpate pore structure with deep pore canals. Normapolles grains have been found inside fossilized flowers of the walnut family.
