F. M.  Carpenter, ?The Lower Permian Insects of Kansas. Part 8: Additional Megasecoptera, Protodonata, Odonata, Homoptera, Psocoptera, Protelytroptera, Plectoptera, and Protoperlaria?, Proceedings of the American Academy of Arts and ?, vol. 73, no. 3, pp. 29 - 70, 1939.