"Seed Ferns" from North America

See images from the:

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

Sphenophyllum emarginatum
From the Carboniferous in Indiana
© 1998 Dr. Richard Paselk, Humboldt State University Natural History Museum

Sphenopteris artemisaefolioides
From the Carboniferous in Illinois
© 1998 Dr. Richard Paselk, Humboldt State University Natural History Museum

Alethopteris seilii
From the Carboniferous in Pennsylvania
© 1998 Dr. Richard Paselk, Humboldt State University Natural History Museum

Neuropteris
From the Carboniferous in New Mexico
© 2003 Spencer Lucas, New Mexico Museum of Natural History

Callixylon
From the Devonian in Kentucky
© 2001 Richard Schrantz

Alethopteris sp.
From the Carboniferous in Oklahoma
© 2005 The Virtual Fossil Museum

Lobatopteris lamuriana (formerly called Pecopteris lamuriana)
From the Carboniferous in Illinois
© 2005 The Virtual Fossil Museum