Leathery forewing of Phyloblatta gaudri
from Graissessac (Fr). Upper Stephanian.
The fern is Pecopteris sp. Click on the photo for
enlargement.
Fossils of coackroaches are relatively common in the Carboniferous,
because of the high fossilisation potential of the leathery forewings.
The photo comes from of the finder of the fossil: Bruno
Vallois.
Some years ago a fossil of a
giant
cockroach (9 cm) has been found in Ohio.