Ephemeroptera (< ἐφήμερος 'diurnus' + πτερόν 'ala') sunt insectorum aquaticorum ordo, cui sunt plus quam tria milia specierum, per orbem terrarum habitantium. Adulti unum diem tantum vivunt.

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Subimago Rhithrogenae germanicae in Equiseto hyemali

Classis : Insecta 
Subclassis : Pterygota 
Superordo : Ephemeropteroidea 
Rohdendorf, 1968
Ordo : Ephemeroptera 
Hyatt & Arms, 1891
   
Palaeontologia
Carboniferum inferiore > RecensHoell, H. V.; Doyen, J. T.; Purcell, A. H. (1998). Introduction to Insect Biology and Diversity (ed. secunda). Oxford University Press. pp. 320, 345–348. ISBN 978-0-19-510033-4.
Subdivisiones: Subordines
Pannota

Schistonota

Furcatergalia

Nexus externi

Vicimedia Communia plura habent quae ad Ephemeroptera spectant.
Vide "Ephemeroptera" apud Vicispecies.
Situs scientifici:  ITIS NCBI Biodiversity Encyclopedia of Life WoRMS: Marine Species Fossilworks
stipula

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