Thyestiida is an order of bony-armored jawless fish in the extinct vertebrate class Osteostraci.The origin and early evolution of the Osteostraci (Vertebrata): A phylogeny for the Thyestiida. Robert S. Sansom, Journal of Systematic Palaeontology, Volume 6, Issue 3, 2008, pages 317-332,
References
External links
Thyestiida at fossilworks.org (retrieved 21 April 2016)