masthead graphic
> Thesoneura americana

Thesoneura americana

ISM 14876
coin = 19mm (~0.75 in.)

This is the wing of the insect Thesoneura americana. It is a member of the extinct group of large insect called the Palaeodictyoptera; this group is related to modern mayflies and dragonflies.

This specimen is the holotype.

Copyright 2003, Illinois State Museum Society