(4): 577–581. ISSN 1210-5759. doi:10.14411/eje.2004.081 (英语). TheodoreDruAlisonCockerell. Fossil Insects.. Annals of the Entomological Society of America
(4): 413–425. ISSN 0375-1511. doi:10.26515/rzsi/v118/i4/2018/122129. Cockerell, T. D. A. Descriptions and records of bees—XXXVI. The Annals and Magazine
Ichnos. 2004, 11 (3–4): 357–362. doi:10.1080/10420940490442287. Cockerell, TheodoreDruAlison. The Supposed Plumage of the Eocene Bird Diatryma (PDF). American