Spores and Pollen from North America

See images from the:

		Quaternary
		Tertiary
		Cretaceous
		Jurassic
		Triassic
		Permian
		Carboniferous
		Devonian
		Silurian
		Ordovician
		Cambrian
		Precambrian

Picea
From the Quaternary in Louisiana
© 2003 John H. Wrenn, Louisiana State University