Zhongjianornis an enlarged, keeled breastbone in more advanced birds. However, later analysis of the anatomy of "Z. yangi" cast doubt on this interpretation of the bird as very primitive. Research published in 2012 found that some of the apparently primitive features were due to poor preservation of the bones, and that "Zhongjianornis" is more similar in anatomy to primitive euornitheans like "Chaoyangia" and "Schizooura". A phylogenetic analysis showed that a very primitive position in the bird family tree for "Z. yangi" is unlikely given current evidence. Zhongjianornis Zhongjianornis is a genus of beaked, pigeon-sized birds from the early Cretaceous period of
The Anatomy of Melancholy the "Anatomy" is filled with more or less pertinent references to the works of others. A competent Latinist, Burton also included a great deal of Latin poetry in the "Anatomy", and many of his inclusions from ancient sources are left untranslated in the text. "The Anatomy of Melancholy" is an especially lengthy book, the first edition being a single quarto volume nearly 900 pages long; subsequent editions were even longer. The text is divided into three major sections plus an introduction, the whole written in Burton's sprawling style. Characteristically, the introduction includes not only an author's note (titled "Democritus Junior