1.6" Pennsylvanian Fossil Fern (Lyginopteris) - Alabama

This is a 1.6" fossil fern (Lyginopteris), from the Pottsville Formation, Alabama. It is one pinnule (branch of leaflets). This specimen is very well preserved with individual lobes. Venation is visible under magnification.

Lyginopteris is genus of seed fern that contain extinct species of fern that reproduced from seed as opposed to sporophyte reproduction of most modern ferns.