(syn. Crypturellus Ϯ Cinereous Tinamou C. cinereus) Gr. κρυπτος kruptos  hidden  < κρυπτω kruptō  to conceal; ουρα oura  tail; ορνις ornis, ορνιθος ornithos  bird; "The generic name Crypturus as originally proposed by Illiger (Prodromus System. Mamm. et Avium, 1811, after April, p. 244) included two species - Tetrao cinereus Gmelin and Tetrao major Gmelin.  ...  However, as may be seen by reference to the introduction of Illiger's work  ... the name Crypturus, along with a number of others, chiefly mammal names, must be regarded as merely substitutes for older names that Illiger for one reason or another intended to reject.  ... The name Crypturus  ... being a substitute and therefore an absolute synonym of Tinamus Latham, must likewise be rejected, and another name be sought for the group to which it has commonly been applied.  ... since apparently there are no available synonyms, a new name must be provided for Crypturus Auct. nec Illiger. We propose, therefore, to call the group Crypturornis,1 nom. nov., with Tetrao cinereus Gmelin as type.  ... 1 κρυπτος, occultus, ουρα, cauda, ορνις, avis" (Oberholser 1922).

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2018). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2018). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 19 December 2018).