Ornithothoraces follows the results of a phylogenetic analysis by Wang "et al.", 2016: Ornithothoraces Ornithothoraces is a group of avialans that includes all enantiornithes ("opposite birds") and the euornithes ("true birds"), which includes modern birds and their closest ancestors. The name Ornithothoraces means "bird thoraxes". This refers to the modern, highly advanced anatomy of the thorax that gave the ornithothoracines superior flight capability compared with more primitive avialans. This anatomy includes a large, keeled breastbone, elongated coracoids and a modified glenoid joint in the shoulder, and a semi-rigid rib cage. The earliest known members of the group are the enantiornitheans "Protopteryx
The Anatomy of Melancholy and others – make it a valuable contribution to multiple research disciplines. Burton was an obsessive rewriter of his work and published five revised and expanded editions of "The Anatomy of Melancholy" during his lifetime. It has often been out of print, most notably between 1676 and 1800. Because no original manuscript of the "Anatomy" has survived, later reprints have drawn more or less faithfully from the editions published during Burton's life. Early editions are now in the public domain, with several available in their entirety from a number of online sources such as Project Gutenberg. In recent years, increased