Casuariidae

The fossil record of casuariforms is interesting, but not very extensive.

Some Australian fossils initially believed to be from emus were recognized to represent a distinct genus, Emuarius,^[3] which had a cassowary-like skull and femur and an emu-like lower leg and foot.

• Boles, Walter E. (2001): A new emu (Dromaiinae) from the Late Oligocene Etadunna Formation. Emu 101: 317–321. HTML abstract
• Brands, Sheila (14 August 2008). "Systema Naturae 2000 / Classification, Family Casuariidae". Project: The Taxonomicon. Retrieved 4 February 2009.^{[permanent dead link]}
• Clements, James (2007). The Clements Checklist of the Birds of the World (6 ed.). Ithaca, NY: Cornell University Press. ISBN 978-0-8014-4501-9.
• Folch, A. (1992). Family Casuariidae (Cassowaries). pp. 90– 97 in; del Hoyo, J., Elliott, A. & Sargatal, J. eds. Handbook of the Birds of the World, Vol 1, Ostrich to Ducks. Lynx Edicions, Barcelona. ISBN 84-87334-09-1