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
Journal for the Scientific Study of Religion Journal for the Scientific Study of Religion The Journal for the Scientific Study of Religion ("JSSR") is a quarterly peer-reviewed academic journal published by Wiley-Blackwell in the United States of America under the auspices of the Society for the Scientific Study of Religion, dedicated to publishing scholarly articles in the social sciences, including psychology, sociology and anthropology, devoted to the study of religion. It is not a theology journal, as its publications tend to be empirical papers in the aforementioned disciplines, rather than papers assessing the truth or falsity, or otherwise attempting to clarify, theological doctrines. However, the eminent theologian