NOMEN: †Megasecopterida Brongniart 1885: 63 [C. Brongniart. Les insectes fossiles des terrains primaires, coup d'oeil rapide sur la faune entomologique des terrains paleozoiques. Bulletin de la Soc. des Amis des Sc. natur. de Rouen, 1885: 50-68]
ORIGINAL LISTED MEMBERSHIP (Brongniart 1885): Protocapnia + Brodia + Trichaptum + Campyloptera + Sphecoptera + Woodwartia + Corydaloides
NON-MONOSEMANTIC CIRCUMSCRIPTIONAL SYNONYMS (distinctly including Eudiaphanoptera):
= Megasecoptera Handlirsch 1906
NON-MONOSEMANTIC CIRCUMSCRIPTIONAL SYNONYM (distinctly without Protohymenoptera):
= Eumegasecoptera Jeannel 1947
TYPIFIED NAME IN BASIC FORMAT: Mischoptera/fg
TYPIFIED NAMES IN USE: Mischopterida
MODERN
STATUS: 
the valid, the
oldest name of a widely accepted, extinct taxon.