Pennsylvanian insects

Meganeura (Ancient Greek: μέγα (large) + νευρόν (vein or nerve)) is a genus of extinct insects from the Late Carboniferous (approximately 300 million years ago). It is a member of the extinct order Meganisoptera (also known as griffenflies), which are closely related to and resemble dragonflies and damselflies (with dragonflies, damselflies and meganisopterans being part of the broader group Odonatoptera). While various species of Meganeura have been named, only one is now considered valid: the type species, M. monyi.

Archimylacris (meaning "primitive Mylacris", in reference to another species of Carboniferous cockroach) is an extinct genus of cockroach-like blattopterans, a group of insects ancestral to cockroaches, mantids, and termites.

Apthoroblattina is an extinct genus of primitive cockroaches from the Carboniferous period. Fossils of the genus have been found in England, Wales, the United States, and Russia. The paratype specimen for the species A. johnsoni is recorded to have a total length of and a width of , while the type specimen of A. sulcata is noted to have been up to in length and in width if complete.