Ornithurae

Recall that little more than Archaeopteryx, a few enantiornithines, and Ornithurae were known at the last writing; now a six-page taxon list!

Paul Nelson: Skepticism of the dino bird hypothesis explored - The Panda's Thumb 2007

Ornithurae and closely related taxa (together, the Ornithuromorpha) represent one of the speciose branches of post-Jurassic birds; the other being the Enantiornithes (“opposite birds”).

A comment on the Gansus find - The Panda's Thumb 2006

Gansus is, based on phylogenetic analysis of the new data, the oldest recovered member of Ornithurae the clade containing all living birds Neornithes, Ichthyornis, and Hesperornithiformes.

A comment on the Gansus find - The Panda's Thumb 2006