NOMEN: Dicondylata Boudreaux 1979: 267 [H.B. Boudreaux . Arthropod phylogeny with special reference to insects. John Willey & sons, New York, Chichester, Brisbane, Toronto, 1979. 1-320]
ORIGINAL LISTED MEMBERSHIP (Boudreaux 1979):
Zygentoma + Pterygota 
SENIOR CIRCUMSCRIPTIONAL SYNONYM:
= Dicondylia Hennig 1953 (non Haeckel 1866)
NON-MONOSEMANTIC CIRCUMSCRIPTIONAL SYNONYM (distinctly without †Monura):
TYPIFIED NAME IN BASIC FORMAT: Pediculus/f=Scarabaeus/g (sine Machilis; incl. Lepisma)
TYPIFIED NAMES IN USE: -
MODERN STATUS: the oldest non-preocculied name of a taxon, which was regarded to be holophyletic (Hennig 1953); recently it is rejected as paraphyletic (Kluge 2000).