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Temporal range: Carboniferous – Recent
maybe Phasmatodea – (phasmids)
The term Dictyoptera is usually considered a superorder, with Isoptera, Blattaria and Mantodea being its three orders. In some classifications, however, Dictyoptera is shifted to order status.
Regardless, in all classifications the three constituent groups are the same, just treated at different rank. Termites and cockroaches are very closely related, with ecological and molecular data pointing to a relationship with the cockroach genus Cryptocercus.
- Lo N. et al. 2000. Evidence from multiple gene sequences indicates that termites evolved from wood-feeding cockroaches. Current Biology 10(13):801-804.
- Inward D; G. Beccaloni and P. Eggleton 2007. Death of an order: a comprehensive molecular phylogenetic study confirms that termites are eusocial cockroaches. Biology Letters 3:331-335. 
- Cameron, Stephen L.; Barker, Stephen C. & Whiting, Michael F. 2006. Mitochondrial genomics and the new insect order Mantophasmatodea. Molecular Phylogenetics and Evolution 38: 274–279. (HTML abstract)