Was Euornithes really coined by Sanz & Buscalioni 1992?
I thought it was Dementjev (1940). Don't have (or even know) the exact
reference.
I've never seen
that used, and I really like Sereno's definition (...apart from the lack of
*Enantiornis*).
I think this is because _Enantiornis leali_ is not especially well-known
(morphologically speaking). The paper that first described this species
(and coined the 'subclass' Enantiornithes) only mentioned the name _E.
leali_ once - in a figure caption.