Carpenter, F. M. 1992. Superclass Hexapoda. Volume 3 of Part R, Arthropoda 4; Treatise on Invertebrate Paleontology, Boulder, Colorado, Societat Geològica dels Estats Units (Geological Society of America).
Grimaldi, David and Engel, Michael S. (2005-05-16). Evolution of the Insects, Cambridge University Press. ISBN 0-521-82149-5.